Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . .v Unit C: Earth and Its Resources LIFE SCIENCE Unit A: Diversity of Life Chapter 1 Cells and Kingdoms Chapter Test A . . . . . . . . . . . . . . . . . . . . . . . 1 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . . .5 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . . 6 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . . .7 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . . 8 Lesson 5 Test . . . . . . . . . . . . . . . . . . . . . . 9 Chapter Test B . . . . . . . . . . . . . . . . . . . . . .10 Performance Assessment Rubric . . . . . . 14 Performance Assessment Activity . . . . . 15 Chapter 2 Parents and Offspring Chapter Test A . . . . . . . . . . . . . . . . . . . . . . 16 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 20 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . . 21 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 22 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . 23 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 24 Performance Assessment Rubric . . . . . 28 Performance Assessment Activity . . . . 29 Unit B: Ecosystems ¥.BDNJMMBO.D(SBXm )JMM Chapter 3 Interactions in Ecosystems Chapter Test A . . . . . . . . . . . . . . . . . . . . . 30 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 34 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . 35 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 36 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 37 Performance Assessment Rubric . . . . . . 41 Performance Assessment Activity . . . . 42 Chapter 4 Ecosystems and Biomes Chapter Test A . . . . . . . . . . . . . . . . . . . . . Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . Chapter Test B . . . . . . . . . . . . . . . . . . . . . Performance Assessment Rubric . . . . . Performance Assessment Activity . . . . EARTH SCIENCE 43 47 48 49 50 . 51 55 56 Chapter 5 Our Dynamic Earth Chapter Test A . . . . . . . . . . . . . . . . . . . . . 57 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . . 61 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . 62 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 63 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . 64 Lesson 5 Test . . . . . . . . . . . . . . . . . . . . . 65 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 66 Performance Assessment Rubric . . . . . 70 Performance Assessment Activity . . . . . 71 Chapter 6 Protecting Earth’s Resources Chapter Test A . . . . . . . . . . . . . . . . . . . . . 72 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 76 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . 77 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 78 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . 79 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 80 Performance Assessment Rubric . . . . . 84 Performance Assessment Activity . . . . 85 Unit D: Weather and Space Chapter 7 Weather Patterns Chapter Test A . . . . . . . . . . . . . . . . . . . . . 86 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 90 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . . 91 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 92 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . 93 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 94 Performance Assessment Rubric . . . . . 98 Performance Assessment Activity . . . . 99 Chapter 8 The Universe Chapter Test A . . . . . . . . . . . . . . . . . . . . 100 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . 104 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . .105 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . 106 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . .107 Chapter Test B . . . . . . . . . . . . . . . . . . . . .108 Performance Assessment Rubric . . . . . 112 Performance Assessment Activity . . . . 113 JJJ Contents PHYSICAL SCIENCE Unit E: Matter Chapter 9 Comparing Kinds of Matter Chapter Test A . . . . . . . . . . . . . . . . . . . . . 114 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 118 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . 119 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . .120 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 121 Performance Assessment Rubric . . . . . 125 Performance Assessment Activity . . . . 126 Chapter 10 Physical and Chemical Changes Chapter Test A . . . . . . . . . . . . . . . . . . . . . 127 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 131 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . . 132 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 133 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . .134 Chapter Test B . . . . . . . . . . . . . . . . . . . . . 135 Performance Assessment Rubric . . . . . 139 Performance Assessment Activity . . . 140 Unit F: Forces and Energy Chapter 12 Using Energy Chapter Test A . . . . . . . . . . . . . . . . . . . . . 155 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . . 159 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . .160 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 161 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . . 162 Lesson 5 Test . . . . . . . . . . . . . . . . . . . . .163 Chapter Test B . . . . . . . . . . . . . . . . . . . . .164 Performance Assessment Rubric . . . . .168 Performance Assessment Activity . . . .169 JW ¥.BDNJMMBO.D(SBXm )JMM Chapter 11 Using Forces Chapter Test A . . . . . . . . . . . . . . . . . . . . . 141 Lesson 1 Test. . . . . . . . . . . . . . . . . . . . . .145 Lesson 2 Test . . . . . . . . . . . . . . . . . . . . .146 Lesson 3 Test . . . . . . . . . . . . . . . . . . . . . 147 Lesson 4 Test . . . . . . . . . . . . . . . . . . . . .148 Chapter Test B . . . . . . . . . . . . . . . . . . . . .149 Performance Assessment Rubric . . . . . 153 Performance Assessment Activity . . . .154 Introduction Macmillan/McGraw-Hill Assessment in science, Grade 5, is a comprehensive program designed to familiarize students with standardized testing in science and to review the concepts covered in Macmillan/McGraw-Hill Science: A Closer Look. The practice tests and performance assessment activities in this book can also serve as tools in a complete program of assessment to help gauge mastery of the science content students have learned. About This Book The questions in this book will accustom students to standardized testing in science, including multiple-choice and open-response style questions about Life Science, Earth Science, and Physical Science, in a gradeappropriate manner. General scientific methods are stressed along with critical thinking. ¥.BDNJMMBO.D(SBXm )JMM The main components of this book coincide with the respective chapters and lessons in Macmillan/McGraw-Hill Science: A Closer Look and include: Chapter Tests A and B: Each summative practice test covers science content from the corresponding chapters and tests students’ knowledge of important vocabulary and concepts they have learned. Key concepts are tested in several ways to ensure that students comprehend core content. Skills such as making inferences, drawing conclusions, and scientific thinking are emphasized in the practice tests. Both practice tests cover the same content, but test the material in different ways, providing the teacher with several options of using the tests as pretests and posttests, chapter tests, homework assignments, or as extra practice. Lesson Tests: These pages provide test practice and focus on specific concepts covered in each lesson of the corresponding chapter. Performance Assessment Activity: Each activity covers a main concept from the corresponding chapter and provides students with a hands-on exercise that further reinforces the content they have learned. A rubric precedes each activity and provides guidelines for grading students’ performance. Performance assessment activities require adult supervision. How to Administer the Practice Tests • Remove the practice test pages from the book and photocopy them for students. Answers for all questions are marked in nonreproducible blue ink. • Separate students’ desks so that students can work independently. • Tell students that they are taking a practice test and ask them to remove everything from their desks except for several pencils. They may not speak to classmates until the test is over. • Keep the classroom atmosphere as much like the administration of a standardized test as possible. Minimize distractions and discourage talking. The scientific knowledge assessed in this book and in Macmillan/McGraw-Hill Science: A Closer Look will help students build a strong foundation in science and lay the groundwork for future learning. W Name Chapter Test A Date Cells and Kingdoms Write the word or words that best complete each sentence in the spaces below. Words may be used only once. asymmetrical chlorophyll muscular system cambium classification organism cell kingdom photosynthesis organism 1. A(n) skeletal system is a living thing. cell 2. A(n) is the smallest unit of a living thing that can carry out the basic processes of life. 3. A living thing that has an irregular shape is skeletal system 4. The . is made up of bones, tendons, and ligaments. muscular system 5. The asymmetrical power to move. provides an animal with the 6. In a plant stem, the xylem and phloem are produced in cambium the . 7. The process by which leaves make food is called photosynthesis . 8. A chemical that causes the leaves of plants to appear chlorophyll © Macmillan/McGraw-Hill green is 9. A . kingdom consists of living things that are grouped by internal form and structure. 10. Scientists use things. Chapter 1 • Cells and Kingdoms Assessment classification to group living Use with Chapter 1 1 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. What is the narrowest group 14. an organism can be classified into? A kingdom B species C genus D class 12. A group of cells work together to form The body plan of the organism shown above is A organs. A radially symmetrical. B organ systems. B asymmetrical. C tissues. C bilaterally symmetrical. D muscles. D complex. 13. The area of a plant through which sugars move is the 15. To which body system does the esophagus belong? A muscular B xylem. B skeletal C stomata. C excretory D phloem. D digestive © Macmillan/McGraw-Hill A cambium. 2 Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 Name Chapter Test A Date Answer the following questions. 16. Make a Model Label this model of the respiratory system of a rabbit. alveoli bronchi 17. Define Explain the differences between vascular and nonvascular plants. Vascular plants have a system of tubes that run up and down the plant. The tubes carry water and nutrients from one part of the plant to another. These plants can grow very tall. Nonvascular plants do not have a system of tubes to carry water and nutrients. They do not grow tall because they must stay close to the ground to soak up water. 18. Interpret Data Read the data about an animal and select the animal described from the list below. The animal has hair and a big brain. It is warm-blooded, and it does not lay eggs. The animal gives birth to its offspring, which it carries in a pouch while the offspring develops. © Macmillan/McGraw-Hill What type of animal is it? bird monotreme marsupial marsupial placental mammal Explain how you know the other answer choices are not correct. Bird is not correct because a bird lays eggs and has feathers. Monotreme is not correct because although a monotreme has hair, a big brain, and is warm-blooded, it lays eggs. Placental mammal is not correct because a mammal’s young develop inside the mother. Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 3 Chapter Test A Name Date Answer the following questions. 19. What are the differences between plant cells and animal cells? Plant cells are capable of making their own food, using chlorophyll in the chloroplasts, while animal cells cannot. Plant cells also have a central vacuole and a cell wall around the cell membrane to give the cells more support. Plant cells depend only on sunlight for energy, but animal cells require other animal cells or plant cells for energy. 20. What are the three levels of cellular organization in animals? Give an example of each. The levels of cellular organization in animals include tissues, organs, and organ systems. Muscles are tissues. The heart is an organ. The circulatory system is an organ system. 21. Critical Thinking Plants with soft stems often grow in the same area as plants with woody stems. During a thunderstorm with high winds, which type of plant is most likely to be damaged? Explain your response. A plant with a woody stem is more likely to be damaged. Plants with woody stems grow taller than plants with soft stems, so they are more likely to be struck by lightning. Plants with soft stems bend more easily than plants with woody stems, so they are not as likely to be broken or uprooted by wind. a plant with a thick cuticle will survive longer without water than a plant with a thin cuticle. Explain how the scientist could test this hypothesis. The scientist could place a plant with a thick cuticle next to a plant with a thin cuticle in a well-lit area. She could give both plants an equal amount of water and observe the plants once per day. The plant that remains green and healthy after several days is the one that will survive the longest. 4 Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 © Macmillan/McGraw-Hill 22. Thinking Like a Scientist A scientist hypothesizes that Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Cells are made of many different smaller structures called A bacteria. B organelles. C membranes. D mitochondria. 2. Which structure is found in plant cells but not in animal cells? A mitochondrion B nucleus C chloroplast D cell membrane 3. What is the purpose of chlorophyll? A to absorb sunlight B to store water C to store nutrients D to digest food 4. Which body system breaks down food and gets rid of wastes? A circulatory B respiratory C muscular D digestive Critical Thinking Find and label the cell membrane. Explain why the job of a cell membrane is important to a cell. © Macmillan/McGraw-Hill cell membrane A cell membrane controls what substances can move into and out of the cell. It prevents harmful substances from entering and prevents necessary substances, such as water or nutrients, from leaving. Chapter 1 • Cells and Kingdoms Assessment Use with Lesson 1 Cells 5 Lesson 2 Test Name Date Circle the letter of the best answer for each question. 1. Which includes both unicellular and multicellular species? A animals B plants C protists D bacteria 2. Which list ranks the categories of living things from broadest to narrowest? A kingdom, phylum, class, order, family, genus, species 4. The following table shows the differences between plants and fungi. Plants Fungi all cells have cell walls all cells have cell walls multicellular unicellular or multicellular make their own food do not make their own food no movement or sense organs no movement or sense organs B kingdom, genus, species, What is the main difference between plants and fungi? C kingdom, genus, family, A Fungi can move from place D species, genus, kingdom, B Fungi have sense organs. phylum, class, order, family order, class, phylum, species family, order, class, phylum 3. The two major groupings to place. C Plants make their own food. D Plant cells have cell walls. within the animal kingdom are A bacteria and protists. B vertebrates and invertebrates. D mammals and marsupials. Critical Thinking Explain at least two ways in which bacteria and protists can be helpful to people. Some bacteria, such as those that live inside the stomach, help animals digest food. Others produce needed vitamins. Protists, such as yeasts, help us produce foods such as bread. 6 Chapter 1 • Cells and Kingdoms Assessment Use with Lesson 2 Classifying Life © Macmillan/McGraw-Hill C arthropods and chordates. Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. Which part of a root transports water and nutrients? A epidermis 3. The function of guard cells in leaves is to A allow water to enter the leaf. B root cap B allow air to enter the leaf. C vascular system C regulate transpiration of D cortex 2. The function of a plant’s cambium layer is to A transport water. B transport nutrients. C produce food. D produce new cells. water. D regulate photosynthesis. 4. The products of photosynthesis are A sugar and oxygen. B water and carbon dioxide. C energy and sunlight. D starch and waste products. Critical Thinking Explain why different kinds of plants have different kinds of roots. Different kinds of plants have different roots depending on the environment they live in. For example, a plant that lives in a dry environment has a taproot to allow it to reach water deep beneath © Macmillan/McGraw-Hill the surface. Chapter 1 • Cells and Kingdoms Assessment Use with Lesson 3 Plants 7 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. Which animal is radially symmetrical? 3. What do bony fish have that sharks do not? A sea sponge A swim bladders B jellyfish B cartilage C worm C gills D mollusk D jaws 2. How are annelid worms, such as earthworms, different from other worms? A Their bodies are divided into segments. B They have a digestive system. 4. Which animal is warm-blooded? A shark B bullfrog C salmon D eagle C They live inside the bodies of other animals. D Their bodies have bilateral symmetry. Critical Thinking Explain some advantages and disadvantages of being warm-blooded. Advantages include being active in a wider variety of temperatures. Disadvantages include needing more food to maintain a constant © Macmillan/McGraw-Hill body temperature. 8 Chapter 1 • Cells and Kingdoms Assessment Use with Lesson 4 Classifying Animals Name Lesson 5 Test Date Circle the letter of the best answer for each question. 1. What happens first when an animal moves its leg? 3. Which structure in fish A A nerve impulse reaches a performs the same function as lungs in mammals? B A muscle contracts. B veins C The muscle pulls on a C fins muscle. tendon. D The tendon pulls on a bone. 2. Which part of the digestive system absorbs nutrients? A mouth B esophagus C stomach A gills D swim bladder 4. Which animal has an open circulatory system? A rattlesnake B timber wolf C lobster D sparrow D small intestine Critical Thinking How does adrenaline help an animal respond to danger? Adrenaline makes an animal’s heart pump faster, sending more blood to the muscles and organs. This prepares the animal to respond to © Macmillan/McGraw-Hill danger more quickly, either by fighting an enemy or by running away. Chapter 1 • Cells and Kingdoms Assessment Use with Lesson 5 Animal Systems 9 Chapter Test B Name Date Cells and Kingdoms Write the word or words that best complete each sentence in the spaces below. Words may be used only once. asymmetrical chlorophyll muscular system cambium classification organism cell kingdom photosynthesis asymmetrical 1. A living thing that is does not have a definite shape. 2. The bones of the skeletal system skeletal system help give the body shape and structure. 3. Xylem and phloem in a plant stem are produced in the cambium 4. A system of . classification is used to group living things. 5. An animal’s power to move is provided by the muscular system . 6. Every living thing is made from a tiny building block called a(n) cell . 7. Leaves make food through the process of photosynthesis . 8. An amoeba, a giant squid, and an oak tree can each be organism . © Macmillan/McGraw-Hill described as a(n) 9. The chemical in plants that causes the leaves to appear green is called chlorophyll . 10. Two ways to group living things into a kingdom are by internal form and structure. 10 Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 Name Chapter Test B Date Circle the letter of the best answer for each question. 11. The skull is a part of the 14. A skeletal system. B digestive system. C muscular system. D excretory system. 12. Organisms can be classified into groups. Which group is the most specific? A kingdom B genus The body plan of the organism shown above is C species A radially symmetrical. D class B asymmetrical. 13. The area of a plant through which water and minerals move is the A cambium. C bilaterally symmetrical. D complex. 15. Which of the following work together to form tissues? B xylem. A organs C stomata. B organ systems D phloem. C cells © Macmillan/McGraw-Hill D muscles Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 11 Chapter Test B Name Date Answer the following questions. 16. Define Complete the chart below. Characteristic Vascular Plants How plant gets Vascular plants have a nutrients Nonvascular Plants Nonvascular plants soak system of tubes that run up water directly from the up and down the plant. ground. Height of plant Vascular plants can grow Nonvascular plants are only a very tall because of their few centimeters tall because system of tubes. they have to stay close to the ground to soak up water. 17. Make a Model Label this model of the respiratory system of a human. alveoli bronchi 18. Interpret Data Read the data about an animal and select the animal described from the list below. What type of animal is it? bird reptile bird monotreme Explain how you know the other answer choices are not correct. A reptile is not correct because it is cold-blooded and has scales instead of feathers. A monotreme is not correct because it does not have feathers and is not lightweight. 12 Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 © Macmillan/McGraw-Hill The animal has hollow bones that make it lightweight. It is a warm-blooded animal that lays eggs. It has feathers. Name Chapter Test B Date Answer the following questions. 19. How is the cellular organization in an animal different from the cellular organization in bacteria? An animal is a multicellular organism. The levels of cellular organization in an animal include tissues, organs, and organ systems. Bacteria are unicellular organisms. They are made up of only one cell that can perform all of the jobs necessary for life. 20. What parts do animal cells and plant cells have in common? Both plant and animal cells have nucleus, mitochondria, cytoplasm, cell membrane, and vacuole. 21. Critical Thinking Do you think a plant with a woody stem or a plant with a soft stem is more likely to survive in an area that has more cloudy days than sunny days? Explain your response. A plant with a woody stem is most likely to survive. Plants with woody stems grow taller than plants with soft stems, so they are more likely to gain benefits from the available sunlight. © Macmillan/McGraw-Hill 22. Thinking Like a Scientist A scientist hypothesizes that a plant with a thin cuticle will not survive as long without water as a plant with a thick cuticle. Explain what the scientist could do to test this hypothesis. The scientist could place a plant with a thick cuticle next to a plant with a thin cuticle in a well-lit area. She could give both plants an equal amount of water at the same time and then observe the plants once per day for several days. The plant that remains green and healthy after several days is the one that will survive the longest. Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 13 Performance Assessment Name Plant and Animal Cell Poster Date Materials Objective: Students will draw and label plant and animal cells and describe how they are similar. • poster paper Scoring Rubric • pencil • crayons points Student illustrates a plant and an or colored animal cell. Student labels each cell correctly, pencils including all of the cell parts listed. Student writes a clear and accurate description of similarities between plant and animal cells. Student explains each part of each cell to another student accurately and clearly. Student clearly explains his or her answers to the questions in Analyze the Results. points Student illustrates a plant and an animal cell, but labels most parts incorrectly or includes only a few of the cell parts listed. Student writes a description of the similarities between plant and animal cells that is largely inaccurate. Student is able to explain a few of the parts of each cell to another student accurately and clearly. Answers to the questions in Analyze the Results are mostly incorrect. point Student does not accurately illustrate a plant or animal cell or correctly label any of the parts listed. Student writes a description of the similarities between plant and animal cells that is not accurate. Student is not able to explain any of the parts of each cell to another student accurately and clearly. Student does not answer the questions in Analyze the Results. 14 Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 © Macmillan/McGraw-Hill points Student illustrates a plant and an animal cell. Student labels most parts on each cell correctly and includes most of the cell parts listed. Student writes a mostly accurate description of the similarities between plant and animal cells, but the description is unclear. Student is able to explain most of the parts of each cell to another student accurately and clearly. Answers to the questions in Analyze the Results are mostly correct but contain a few errors. Name Performance Assessment Date Plant and Animal Cell Poster Communicate Use the materials provided by your teacher to create a poster that includes both a plant cell and an animal cell. On the plant cell, label the following cell parts: NUCLEUS, MITOCHONDRIA, CYTOPLASM, CELL MEMBRANE, VACUOLE, CHLOROPLAST, and CELL WALL. On the animal cell, label the following parts: NUCLEUS, MITOCHONDRIA, CYTOPLASM, CELL MEMBRANE, and VACUOLE. Beneath your drawings, explain what plant and animal cells have in common. Explain what each part of each cell does to another student. Analyze the Results 1. What are the differences between a plant cell and an animal cell? Animal cells do not have a cell wall, and plant cells do. Plant cells need more support than animal cells. Animal cells do not have chloroplasts and they are not green. Animal cells do not have a large central vacuole for storing water. Animal cells have a more circular shape than plant cells. 2. Why does a cell need a nucleus? The nucleus controls the actions of the cell. Without a nucleus, cells © Macmillan/McGraw-Hill could not grow, move, or divide. Chapter 1 • Cells and Kingdoms Assessment Use with Chapter 1 15 Chapter Test A Name Date Parents and Offspring Write the word or words that best complete each sentence in the spaces below. Words may be used only once. embryo germination pollination external fertilization heredity trait fertilization metamorphosis genes nymph trait 1. Any characteristic of a living thing is a(n) . 2. When a sperm cell from a male and an egg cell fertilization from a female join to create a single unit it is called . 3. When pollen is transferred from the stamen of a flower to the pistil, pollination has occurred. germination 4. The development of a seed into a new plant is called 5. Amphibians become adults through the process of 6. A grasshopper becomes a nymph reaches adulthood. metamorphosis . . before it 7. The process of an egg and sperm joining outside of a female’s body is called external fertilization . called 9. A person’s heredity . genes carry the chemical instructions that determine what characteristics the person inherits. 10. The stage of a new offspring is called a(n) 16 Chapter 2 • Parents and Offspring Assessment embryo . Use with Chapter 2 © Macmillan/McGraw-Hill 8. The passing down of traits from one generation to the next is Name Chapter Test A Date Circle the letter of the best answer for each question. 11. Which picture shows a plant that is a type of runner? A 13. How many stages of development take place in incomplete metamorphosis? A two B three C four B D five 14. Which behavior described below is an instinctive behavior? C A a spider spinning a web B a child riding a bicycle C a gorilla using sign language D D a dog rolling over on command 15. What type of chart is used to show the history of physical traits in a family? 12. What is the yellow powder in plants that contains sperm cells called? A pollen © Macmillan/McGraw-Hill B embryo A carrier B heredity C genetic D pedigree C seed coat D conifer Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 17 Chapter Test A Name Date Answer the following questions. 16. Infer Is the birth of this animal the result of sexual or asexual reproduction? Explain how you know this. The lion cub’s birth is the result of sexual reproduction. A lion cub has both a mother and a father, and the genetic information from both parents is mixed. The lion cub will have physical characteristics of both parents. 17. Make a Model Label the parts of the flower below. stamen sepal petal pistil 18. Interpret Data Susan and David both have blue eyes, The child is more likely to have blue eyes than brown eyes. If the child gets the dominant gene for blue eyes from both parents, he or she will have blue eyes. If the child gets the dominant gene from one parent and the recessive gene from the other parent, the child will still have blue eyes. If the child gets the recessive gene for brown eyes from both parents, the child will have brown eyes. 18 Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 © Macmillan/McGraw-Hill but they both carry a recessive gene for brown eyes. What are the chances that their child will have blue eyes? What are the chances that their child will have brown eyes? Name Chapter Test A Date Answer the following questions. 19. Label the main parts of a seed. cotyledon embryo seed coat 20. Name the four stages of complete metamorphosis. The four stages of complete metamorphosis are the egg, larva, pupa, and adult. 21. Critical Thinking Fish use external fertilization to reproduce. What makes this type of reproduction risky and how have fish adapted to ensure that reproduction is successful? External fertilization is risky because bodies of water are large and some of the cells are lost or eaten by other animals. Fish have adapted by releasing a lot of sex cells at one time. This increases the chances of fertilization. 22. Thinking Like a Scientist How might a forest ranger explain how the seeds of the Table Mountain Pine tree are dispersed? © Macmillan/McGraw-Hill Answers will vary but may include the following: A ranger could explain that the seeds are contained inside cones. These cones can be blown off of a tree by the wind and the wind can carry the seeds miles away. Also, an animal can eat the seeds from the conifer and carry them to another location. Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 19 Lesson 1 Test Name Date Circle the letter of the best answer for each question. 1. The joining of a sperm cell and an egg cell into a single unit is called A fertilization. B vegetative propagation. C asexual reproduction. D sexual reproduction. 2. What kind of asexual reproduction does the picture show? 3. What is one advantage of sexual reproduction? A The offspring look exactly like their mother. B The offspring share traits of both parents. C The offspring can run very fast. D All offspring are females. 4. Which organisms can reproduce through budding? A bacteria B strawberry plants C ants D sponges A budding B splitting C vegetative propagation Critical Thinking Explain why asexual reproduction is most common among organisms that live in stable, unchanging environments. Asexual reproduction means that the offspring will be identical to the parent. If the environment changes and the parent is not well adapted to the new environment, the offspring will not be well adapted either. 20 Chapter 2 • Parents and Offspring Assessment Use with Lesson 1 Reproduction © Macmillan/McGraw-Hill D fertilization Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. Cells that can develop into new individuals without fertilization are A sex cells. B sperm. C spores. D eggs. 2. The female part of a flower is the 3. Why do plants produce nectar? A to attract pollinators B to aid in self-pollination C to allow for asexual reproduction D to help them make pollen 4. Which of the following is part of a seed? A stamen. A embryo plant B pistil. B pistil C petal. C seed membrane D sepal. D anther Critical Thinking Why do plants produce bright, colorful flowers and structures designed to disperse their seeds? To help them reproduce, flowers must attract pollinators, as pollination is necessary for fertilizaton. Seed dispersal is important because it allows seeds to germinate away from the parent plant, where there might be © Macmillan/McGraw-Hill more room for the plant to grow. Chapter 2 • Parents and Offspring Assessment Use with Lesson 2 Plant Life Cycles 21 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. How are nymphs different from adult insects? A They are larger. B They reproduce asexually. 3. Which animal produces a hard-shelled egg that matures outside the mother? A salmon C They have hard outer B bullfrog D They have no wings or sex D lion coverings. organs. 2. Which kinds of animals release their sex cells into water? A fish and amphibians B snakes and lizards C reptiles and birds D mammals only C robin 4. The purpose of an egg yolk is to A feed the growing embryo. B keep the embryo wet. C protect the growing embryo. D grow into a second embryo. Critical Thinking Why do amphibians, such as frogs, toads, and salamanders, need water to complete their life cycles? Although many amphibians live on land and breathe air, they need water to reproduce. Like fish, they reproduce through external © Macmillan/McGraw-Hill fertilization, laying eggs and sperm directly in the water. 22 Chapter 2 • Parents and Offspring Assessment Use with Lesson 3 Animal Life Cycles Name Lesson 4 Test Date Circle the letter of the best answer for each question. 1. Which of the following is 4. In this pedigree, C is dominant an example of a learned behavior? A An oriole builds a hanging nest. B A dog comes when it is called. C A baby takes its first breath. and represents curly hair, and c is recessive and represents straight hair. Father Mother DD $$ $D $D Daughter Son D A rabbit hides from danger. 2. Imprinting is an example of a(n) A recessive trait. B dominant trait. C learned behavior. D instinct. 3. Gregor Mendel discovered that A organisms have dominant and recessive traits. B organisms can learn behaviors. Which person has straight hair? A Mother B Father C Daughter D Son C genes are parts of chromosomes. D genes are chemical © Macmillan/McGraw-Hill instructions for cells. Critical Thinking Can you tell what color a mother dog’s puppies will be based on the color of her coat? Why or why not? No. The color of the puppies would depend on the mother dog’s traits, as well as the traits of the father dog. Chapter 2 • Parents and Offspring Assessment Use with Lesson 4 Traits and Heredity 23 Chapter Test B Name Date Parents and Offspring Write the word or words that best complete each sentence in the spaces below. Words may be used only once. embryo germination pollination external fertilization heredity trait fertilization metamorphosis genes nymph 1. The transfer of pollen from the stamen to the pistil of a flower is called pollination . trait 2. A characteristic such as blue eyes is a(n) . 3. A series of growth stages that are different and distinct from one another is called metamorphosis . 4. An offspring that has just begun to develop is a(n) embryo . 5. The sum of traits passed down from one generation to the next is heredity . 6. The chemical instructions that determine what traits a person will inherit are carried in the genes . join, fertilization has occurred. 8. A seed develops into a new plant through germination . 9. Before a grasshopper reaches adulthood, it becomes a(n) nymph . 10. When an egg and sperm unite outside of a female’s body it is called external fertilization . 24 Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 © Macmillan/McGraw-Hill 7. When a sperm cell from a male and an egg cell from a female Name Chapter Test B Date Circle the letter of the best answer for each question. 11. Which of the following will form a plant’s first leaves after germination? 13. Jordan has green eyes, but both her parents have brown eyes. Her parents must A embryo A have brown hair also. B conifer B not have any dominant C seed coat D cotyledon 12. Some flowers are pollinated by animals and some are not. Which flower below is most likely pollinated by animals? A traits. C be carriers of a recessive trait. D be carriers of a disease. 14. How many stages of development take place in complete metamorphosis? A two B three C four B D five 15. What kind of behavior does a bird use to build its nest? A learned C B dominant C recessive © Macmillan/McGraw-Hill D instinctive D Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 25 Chapter Test B Name Date Answer the following questions. 16. Make a Model Complete the chart about the parts of a flower. Part Description of Part and What It Does The brightly-colored outer blooms of a flower. Petals They attract animals to pollinate the flower. The green parts between petals. They cover and Sepals Stamen protect the flower when it is a bud. The male part of a flower. It produces pollen. The female part of a flower. It contains the ovary, Pistil where fertilization occurs. 17. Interpret Data Jane and Mike both have brown hair, but they both carry a recessive gene for red hair. Will their child be more likely to have brown hair or red hair? Explain your answer. The child is more likely to have brown hair than red hair. If the child gets the dominant gene for brown hair from both parents, he or she will have brown hair. If the child gets the dominant gene for brown hair from one parent and the recessive gene for red hair from the recessive gene from both parents, he or she will have red hair. 18. Infer Is a jellyfish created by sexual or asexual reproduction? Explain your answer. A jellyfish is a result of asexual reproduction. A jellyfish has just one parent, so it is genetically identical to the parent. 26 Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 © Macmillan/McGraw-Hill other parent, he or she will have brown hair. If the child gets the Name Chapter Test B Date Answer the following questions. 19. Look at the pictures below. They show the stages of complete metamorphosis. Number the pictures so they are in the correct order, and label each stage. 3 pupa 1 egg 4 2 adult larva 20. What are the three main parts of a sunflower seed? The three main parts of a seed are the embryo, cotyledon, and seed coat. 21. Critical Thinking Fish reproduce through external fertilization. Monkeys reproduce through internal fertilization. In which instance is an individual offspring more likely to survive? An individual offspring produced by a fish through external fertilization is less likely to survive. An individual offspring produced by internal fertilization is more likely to survive because the egg and sperm cells are protected by the female’s body. © Macmillan/McGraw-Hill 22. Thinking Like a Scientist Corn is a plant that has either male or female reproductive cells and is pollinated by wind. Design an experiment using one male and one female corn plant to show how these plants reproduce. Answers will vary but may include the following: One possible experiment involves planting the two corn plants near each other in a field where they will get sunlight and water, and be exposed to the wind. Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 27 Performance Assessment Name The Life of a Plant Objective: Students will conduct research about a plant and create a poster that shows how the plant reproduces. Scoring Rubric Date Materials • poster board • crayons or colored pencils points Student creates a poster that has an • pencil accurate drawing of the plant he or she has chosen based on research. Student correctly labels all parts of the plant, including the parts of the flower if the plant is a flowering plant. Student correctly explains each step in the plant’s reproduction. Student clearly explains his or her answers to the questions in Analyze the Results. points Student creates a poster that has a mostly accurate drawing of the plant they have chosen based on research. Student correctly labels most parts of the plant, including parts of the flower if the plant is a flowering plant. Student correctly explains most steps in the plant’s reproduction. Answers to the questions in Analyze the Results are partly correct. point Student does not include a drawing that accurately represents the plant researched. Student correctly labels one part of the plant or flower if it is a flowering plant. Student does not provide a written explanation for how the plant reproduces. Student does not answer the questions in Analyze the Results. 28 Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 © Macmillan/McGraw-Hill points Student creates a poster that has a drawing of a plant, but the drawing may have several mistakes or have parts missing. Student correctly labels a few parts of the plant, including parts of the flower if the plant is a flowering plant. Student correctly explains at least one step in the plant’s reproduction. Answers to the questions in Analyze the Results are wrong. Name Date Performance Assessment The Life of a Plant Communicate You are a scientist studying how plants reproduce. Choose a plant to research. Make a poster about that plant. Draw the plant and include labels for each part of the plant. If the plant is a flowering plant, include labels for the parts of the flower. Write a statement explaining how the plant reproduces. Analyze the Results 1. Angiosperms are plants that produce flowers. Why are angiosperms better able to produce offspring than other plants? Angiosperms produce flowers, seeds, and fruits. Perfect flowers are easily pollinated because they have both male and female cells. Imperfect flowers do not have both types of cells, but they can be pollinated when cells are carried from flower to flower by insects. The seeds of angiosperms are easily moved from one place to another by wind or by animals. 2. How is plant reproduction similar to animal reproduction? Most plants and animals need male and female cells to reproduce. Most plants and animals need a male cell to fertilize a female cell. The offspring of plants and animals are called embryos. In a plant, the © Macmillan/McGraw-Hill embryo develops inside the seed. In an animal, the embryo develops inside an egg or inside the mother’s body. Chapter 2 • Parents and Offspring Assessment Use with Chapter 2 29 Chapter Test A Name Date Interactions in Ecosystems Write the word or words that best complete each sentence in the spaces below. Words may be used only once. adaptation limiting factor protective coloration ecosystem mimicry symbiosis food chain niche habitat population 1. All the living and nonliving things in an environment make up a(n) ecosystem . 2. Something that restricts the growth of animals or plants is a(n) limiting factor . 3. Energy flows in one direction in a(n) food chain . population 4. All the deer in a forest make up of a(n) . 5. A place where an organism lives and finds food is called a(n) habitat . 6. A relationship between two or more different organisms is symbiosis . 7. A characteristic that helps an organism survive in its adaptation . 8. Some animals use protective coloration to hide. 9. The job an organism has in a community is its 10. Some animals use mimicry like a more dangerous animal. 30 Chapter 3 • Interactions in Ecosystems Assessment niche . to look and act Use with Chapter 3 © Macmillan/McGraw-Hill environment is a(n) Name Chapter Test A Date Circle the letter of the best answer for each question. 11. Animals that only eat other animals are called A herbivores. population that an area can support is its A limiting factor. B carnivores. B habitat. C decomposers. C carrying capacity. D omnivores. 12. Which animal completes the food chain shown below? grass 13. The measure of the size of a bobcat D niche. 14. A bird gets nectar from a flower and helps to carry pollen for the flower. This relationship is called A symbiosis. B mutualism. A rabbit C parasitism. B tiger D commensalism. C bear D fish 15. The harmless king snake’s coloring is so similar to the poisonous coral snake that it frightens off predators. This is an example of A an adaptation. B camouflage. C a limiting factor. © Macmillan/McGraw-Hill D mimicry. Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 31 Chapter Test A Name Date Answer the following questions. 16. Classify Draw a line to match each box on the left with a category on the right. frog rock abiotic factors lake flower biotic factors bird 17. Interpret Data The graph below shows the deer population in a forest, over a span of time. What effect does this have on the other organisms in the deer’s food chain? What will eventually happen to the deer? 400 Deer Population 1970—2005 350 300 250 200 150 100 50 0 1970 1975 1980 1985 1990 1995 2000 2005 The deer population has increased over time. Since deer eat plants, the number of plants in the forest will decrease. Animals that are predators decrease because they will not have enough plants to eat. 18. Communicate Is it possible for two organisms to live in the same habitat but have different niches? Explain your answer. Yes. A niche is the job an organism has in its community. In order for all organisms in a habitat to survive, different organisms need to have different niches. 32 Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 © Macmillan/McGraw-Hill of deer will have plenty of food. Eventually, the deer population will Name Chapter Test A Date Answer the following questions. 19. Give an example of a symbiotic relationship that shows commensalism. Explain how that relationship works. Answers will vary but may include: A remora gets food and protection from a shark. The shark does not benefit from the remora, but it is not hurt either. 20. Look at the animals below. Draw arrows matching the predators to their prey. 21. Critical Thinking Why does a typical ecosystem have many more plants than herbivores? Where are plants in an energy pyramid? Plants get energy from sunlight, and they produce energy for the herbivores to eat. Only about 10% of the energy inside a plant is turned into herbivore tissue, so 90% of the energy is lost. In order to produce enough energy for herbivores to survive, there has to be a © Macmillan/McGraw-Hill large number of plants. Therefore, plants are at the bottom (largest) level of an energy pyramid. 22. Thinking Like a Scientist Look at the picture of the shark in Question 20. What structural adaptations do you notice? The shark has large jaws and sharp teeth to catch its prey. It has a body shape that makes swimming easier. Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 33 Lesson 1 Test Name Date Circle the letter of the best answer for each question. a biotic factor in a forest ecosystem? A soil B rocks C acorns D carbon dioxide 2. Rabbits have overrun a community garden and are eating everything in it. Which of the following would be the most ecological solution to the problem? A hawks B poison C traps D hunting 3. What happens when the top predator is removed from an ecosystem? A The number of consumers increases. B The number of decomposers increases. C The number of consumers decreases. D The number of decomposers decreases. 4. What percentage of energy is lost at each level in a food chain? A 10% B 40% C 60% D 90% Critical Thinking When wolves, a top predator, were reintroduced to Yellowstone National Park, many changes took place throughout the park ecosystem. One of the changes was an increase in the number of young trees and other small plants throughout the park. Explain why this happened. Wolves are a top predator, which means that they eat many consumers. As a result, there were fewer consumers to eat plants, and more plants survived. 34 Chapter 3 • Interactions in Ecosystems Assessment Use with Lesson 1 Energy Flow in Ecosystems © Macmillan/McGraw-Hill 1. Which of the following is Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. Any resource necessary to the survival of populations in an ecosystem may become a(n) 3. What is the special role an organism plays in a community? A abiotic factor. A niche B biotic factor. B habitat C limiting factor. C ecosystem D niche. D population 2. A relationship between two organisms that benefits both organisms is called 4. The greatest number of individuals that an ecosystem can support within a population is the A symbiosis. A limiting factor. B mutualism. B habitat. C commensalism. C carrying capacity. D parasitism. D community. Critical Thinking The table shows the number of wolves and elk per square kilometer of a national park over a four-year period. © Macmillan/McGraw-Hill Wolf and Elk Population per Square Kilometer Species 2007 2008 2009 2010 Wolf 3 6 10 6 Elk 50 100 35 50 Explain what happened to the wolf and elk populations between 2007 and 2010. At first, both populations increased. Then, in 2009, as the wolf population grew too large for the amount of food available, the number of elk declined steeply. As a result, the wolf population declined, and the elk population began to recover. Chapter 3 • Interactions in Ecosystems Assessment Use with Lesson 2 Relationships in Ecosystems 35 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. Which of the following is a behavioral adaptation? 3. Which of the following is a A An arctic hare has a white plant adaptation for a hot, dry climate? B A fawn remains very still to B bright-colored flowers coat in the winter. avoid being seen. C A male cardinal has very bright red feathers. D A hummingbird has a long, thin bill. 2. Which of the following is a structural adaptation? A Black bears hibernate in winter. B Wolves hunt in packs. C Foxes have thick winter coats. A large, thin leaves C thick, waxy leaves and stems D lengthened growing season 4. Forest butterflies are often brown. This helps them to A find nectar. B avoid predators. C keep warm. D avoid the need to hibernate. D Robins fly south for the winter months. its habitat. For example, plants that live in shade have longer growing seasons to gather the energy necessary to flower and produce fruit. Desert plants may have very short growing seasons to take advantage of unpredictable rainy seasons. 36 Chapter 3 • Interactions in Ecosystems Assessment Use with Lesson 3 Adaptation and Survival © Macmillan/McGraw-Hill Critical Thinking Explain how a shortened or lengthened growing season can be an adaptation for a plant. Give at least one example. A shortened or lengthened growing season can help a plant adjust to Name Performance Assessment Date Interactions in Ecosystems Write the word or words that best complete each sentence in the spaces below. Words may be used only once. adaptation limiting factor prey commensalism mimicry protective resemblance community niche ecosystem population 1. The organisms within an ecosystem that belong to the population same species are called a(n) . adaptation 2. A polar bear’s white coat is an example of a(n) . 3. An insect that looks like a stick uses protective resemblance . 4. An adaptation in which an animal looks or acts like mimicry another animal is 5. A(n) ecosystem . is made up of both biotic and abiotic factors. prey 6. An organism that gets eaten by other animals is 7. An organism’s role in a community is its 8. A(n) community . includes all of the living things in an ecosystem. © Macmillan/McGraw-Hill niche . 9. A relationship between two animals in which one animal obtains food from the other without helping or hurting it is commensalism 10. Sunlight is a common . limiting factor restrict the growth of populations. Chapter 3 • Interactions in Ecosystems Assessment that can Use with Chapter 3 37 Chapter Test B Name Date Circle the letter of the best answer for each question. 11. Which plant or animal completes the food chain shown below? 13. Which animal is an omnivore? A frog B deer C tiger D raccoon plankton whale A frog B seagull C shark D krill 12. Barnacles grow on the back of a whale. They gain a home and the whale is not hurt. This is an example of A mutualism. B symbiosis. C commensalism. same prey, they both occupy the same A carrying capacity. B niche. C limiting factor. D biotic factor. 15. A cheetah’s spotted coat is an example of A camouflage. B a limiting factor. C symbiosis. D a niche. © Macmillan/McGraw-Hill D parasitism. 14. If two predators only eat the 38 Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 Name Chapter Test B Date Answer the following questions. 16. Interpret Data Look at the graph. What has happened to the plant population over time? What effect could this have on other organisms in the plant’s food chain? Plant Population 1970—2005 400 350 300 250 200 150 100 50 0 1970 1975 1980 1985 1990 1995 2000 2005 The plant population has decreased over time. This could affect the herbivores that eat the plant. These animals could decrease in number, as well as the carnivores that eat the herbivores. © Macmillan/McGraw-Hill 17. Classify List each item in the correct column of the chart. bird grass squirrel deer rock stream Biotic Factors Abiotic Factors deer, tree, bush, grass, bird, squirrel rock, stream tree 18. Communicate Give an example of a parasite. Which organism benefits from parasites? Answers will vary. Students should mention that only parasites will benefit. Other organisms that compete with the host organism may benefit. Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 39 Chapter Test B Name Date Answer the following questions. 19. Look at the scene to the right. Use arrows to connect the predators to their prey. 20. Give an example of protective coloration. Answers will vary but may include: The arctic fox has a white coat in winter. It changes the color of its coat to blend in with plants that grow in the summer. 21. Critical Thinking Why are there more herbivores than carnivores in a typical ecosystem? When a carnivore eats an herbivore, only about 10 percent of the energy from the herbivore is used to create new carnivore tissue. It takes about nine herbivores to sustain the life of one carnivore. 22. Thinking Like a Scientist What structural adaptations The cactus has spines to protect it from being eaten by herbivores and omnivores. It has a very thick outer covering to hold water in and protect it from intense heat and sunlight. 40 Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 © Macmillan/McGraw-Hill would you notice on a cactus? Name Date The Web of Life Performance Assessment Materials Objective: Students will choose an ecosystem to research and create a food web that includes some of the organisms commonly found in that ecosystem. • poster board Scoring Rubric • markers or crayons • pencil points Student designs a food web for the ecosystem that includes at least ten different organisms. The food web includes producers, herbivores/omnivores, carnivores, and decomposers. Each organism in the food web is accurately connected to the other organisms. Student writes a caption for each organism naming the organism and telling whether it is a producer, consumer, or decomposer. © Macmillan/McGraw-Hill points Student designs a food web for the ecosystem that includes at least eight different organisms. The food web includes producers, herbivores/omnivores, carnivores, and decomposers. Most organisms in the food web are accurately connected to the other organisms. Student writes a caption for each organism naming the organism and telling whether it is a producer, consumer, or decomposer. points Student designs a food web for the ecosystem that includes at least four different organisms. The food web includes producers, herbivores/omnivores, carnivores, or decomposers, but one or more of these groups is left out. Some organisms in the food web are accurately connected to the other organisms. Student writes a caption for some organisms naming each organism and telling whether it is a producer, consumer, or decomposer. point Student attempts to design a food web, but it includes fewer than four organisms. The food web does not include a complete set of producers, herbivores/omnivores, carnivores, and decomposers. The organisms in the food web are not connected accurately. Student does not write captions for the organisms shown. Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 41 Performance Assessment Name Date The Web of Life Communicate What organisms are included in a food web? Choose an ecosystem, such as one found in a forest, desert, prairie, or ocean. Use the Internet or reference books to research the ecosystem. Remember to use only good sources. Create a food web poster for your ecosystem. Label each organism in the food web with the name and its role in the food web. Internet Tips to Stay Smart and Safe DO visit Web sites with useful information for your project. DO ask a teacher for help if you get lost. DO NOT talk to strangers on the Internet. Analyze the Results 1. Which organisms in your food web are decomposers? What do decomposers do? Answers will vary but may include: Fungi, termites, worms, or bacteria; decomposers break down dead or decaying plant and animal material. 2. What could happen to the other organisms in your food web if all of the producers were destroyed? Why would this happen? The other organisms in the food web would die. Producers provide Herbivores eat plants and get energy directly from producers. Carnivores would have no animals to eat for energy. 42 Chapter 3 • Interactions in Ecosystems Assessment Use with Chapter 3 © Macmillan/McGraw-Hill energy for all of the other organisms either directly or indirectly. Name Chapter Test A Date Ecosystems and Biomes Write the word or words that best complete each sentence in the spaces below. Words may be used only once. biome extinct species pioneer species carbon cycle nekton succession estuary nitrogen cycle taiga water cycle 1. The continuous movement of water between Earth’s surface and the air is the water cycle . 2. The process of an ecosystem changing into a different ecosystem is called 3. The succession . carbon cycle involves the continuous exchange of carbon among living things. 4. A species becomes a(n) extinct species member dies. when the last biome 5. A major land ecosystem of Earth is known as a(n) 6. A(n) . estuary is an ecosystem that is part salt water and part fresh water. 7. The first species to live in an otherwise lifeless area is a(n) pioneer species © Macmillan/McGraw-Hill 8. The nitrogen cycle compounds in the soil. . involves trapping a gas into 9. A cool, forest biome containing coniferous evergreen trees is the taiga . 10. The category of organisms in a water ecosystem that includes the larger, active swimmers is called Chapter 4 • Ecosystems and Biomes Assessment nekton . Use with Chapter 4 43 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. The changing of a liquid into a gas is called 14. Which biome contains mostly sand and rocks? A evaporation. A tundra B condensation. B taiga C precipitation. C desert D transpiration. D grassland 12. The formation of a new community where few living things exist is known as A succession. B secondary succession. C primary succession. D pioneer species. 15. Which ocean zone is home to sharks and squids? A intertidal B neritic C abyssal D bathyal 13. Which is the final stage in succession? A primary succession B pioneer community C secondary succession © Macmillan/McGraw-Hill D climax community 44 Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 Name Chapter Test A Date Answer the following questions. 16. Make a Model Explain what is happening in the model of the water cycle. The water evaporates from the ocean and cools in the atmosphere. It then condenses and forms precipitation, falling back to Earth. The water may collect in a watershed or become groundwater. 17. Interpret Data Describe the taiga, the world’s largest biome. What animals and plants live there? The taiga is a cool forest biome found in northern regions. Trees such as pines and firs grow in the taiga, and wolverines and snowshoe rabbits live there. 18. Classify Draw a line matching © Macmillan/McGraw-Hill items in Column 2 to the stage of primary succession in which that item will appear. Chapter 4 • Ecosystems and Biomes Assessment Column 1 pioneer community Column 2 trees intermediate community lichens and mosses climax community grasses and shrubs Use with Chapter 4 45 Chapter Test A Name Date Answer the following questions. 19. Describe the characteristics of a grassland biome. What is an African grassland called? Grasses are the main plant life of a grassland. The grasses are producers, providing food for herbivores. Fires are common in this dry biome. An African grassland is called a savanna. 20. What is the difference between an endangered species and a threatened species? An endangered species is in danger of becoming extinct. A threatened species has low numbers, but not low enough to be considered endangered. 21. Critical Thinking Why is an estuary a good place for a newly developing animal to live? The waters of an estuary are calm. The area is fairly well protected from wind and predators. 22. Thinking Like a Scientist Look at the cattail. What type of fresh water ecosystem do you think this plant comes from? Why? This cattail grows in a standing-water © Macmillan/McGraw-Hill ecosystem. The standing water is good for the cattail because moving water might pull the roots out of the ground. 46 Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Precipitation that flows into rivers, lakes, and streams is called A groundwater. B runoff. C floodwater. 4. The diagram shows the carbon cycle. D condensation. 2. The energy needed for the changes in the water cycle to take place comes from A wind. B green plants. C nitrogen. D the Sun. 3. Nitrogen-fixing bacteria in soil turns nitrogen gas into A water. B ammonia. A: clouds D: trees B: animals E: water C: house F: underground Where is carbon stored in the cycle? A A, B, C, D B B, C, D, E C A, C, E, F D B, C, D, F C oxygen. © Macmillan/McGraw-Hill D carbon dioxide. Critical Thinking Read the following statement: “Plants can live without animals, but animals cannot live without plants.” Is this statement true? Animals need plants for food and oxygen (the products of photosynthesis, as well as for nitrogen (the product of the nitrogen cycle). Plants need animals such as bees to help them reproduce. Chapter 4 • Ecosystems and Biomes Assessment Use with Lesson 1 Cycles in Ecosystems 47 Lesson 2 Test Name Date Circle the letter of the best answer for each question. 1. What is the main difference between primary and secondary succession? 3. Endangered Species Species Reasons for Endangerment gray wolf habitat loss, hunting B Primary succession begins hawksbill sea turtle habitat loss, hunting, pollution C Secondary succession manatee habitat loss, accidents, pollution A The climax of primary succession is pine forest. with bare rock. begins with mosses and lichens. D Secondary succession includes frequent fires. 2. Which is not an example What is the primary reason that these animals are endangered? A habitat loss of a natural environmental change? B hunting A a beaver dam D accidents B a hurricane C a volcanic eruption D a housing development C pollution 4. The final stage of succession in an area is called a(n) A secondary succession. B pioneer community. C climax community. Critical Thinking The gray wolf was formerly found in a wide variety of habitats, including prairie, forests, desert, and tundra. How could such an adaptable animal become endangered? People now live in all these habitats and have crowded out the wolves. Also, many wolves have been lost to hunting, and large predators like wolves need large territories filled with prey. 48 Chapter 4 • Ecosystems and Biomes Assessment Use with Lesson 2 Changes in Ecosystems © Macmillan/McGraw-Hill D ecosystem. Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. The map shows biomes of North America. Which biome covers most of the western part of the United States? 2. Which biome has a mild climate and a great deal of rain? A tundra B desert C tropical rain forest D temperate rain forest 3. Compared with a temperate forest, a grassland has Desert Grassland Forest Taiga A forest B grassland C desert D taiga A less rainfall. B poorer soil. C a warmer climate. D less wildlife. 4. Which biome supports the most animal life? A temperate rain forest B tropical rain forest C temperate forest D grassland © Macmillan/McGraw-Hill Critical Thinking Explain what might happen to tundra animals, such as polar bears, as Earth’s climate warms. As Earth’s climate grows warmer, tundra animals, such as polar bears, could lose their habitat and become extinct. Chapter 4 • Ecosystems and Biomes Assessment Use with Lesson 3 Biomes 49 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. Which animal is an example of benthos? 4. This table summarizes water ecosystems. A barnacle Water Ecosystems B diatom Type of Ecosystem C algae Running water (rivers and streams) D fish larvae Standing water (lakes and ponds) 2. Most pond organisms live in shallow water because A the water is warmer. Wetlands (marshes and bogs) B the water is cleaner. Oceans C there is more oxygen. Estuaries D there is less shelter. 3. In which ocean zone are coral reefs and kelp forests located? A intertidal zone B neritic zone C bathyal zone D abyssal zone Which type of ecosystem has both fresh water and salt water? A river B lake C marsh D estuary Critical Thinking Explain why estuaries contain such large numbers of plants and animals. nutrients support a great deal of plant and animal life. Estuaries provide shelter and protection for organisms to lay eggs and, therefore, attract a large number of animals that prey on the eggs. 50 Chapter 4 • Ecosystems and Biomes Assessment Use with Lesson 4 Water Ecosystems © Macmillan/McGraw-Hill Estuaries are nutrient-rich places where fresh and salt water meet. These Name Chapter Test B Date Ecosystems and Biomes Write the word or words that best completes the sentence in the spaces below. Words may be used only once. biome estuary taiga carbon cycle nekton water cycle climax community nitrogen cycle endangered species succession 1. As part of the carbon cycle plants take in carbon dioxide from the air. nitrogen cycle 2. Bacteria is a necessary part of the . 3. A(n) endangered species is in danger of becoming extinct. 4. During succession , an area is changed by a species, which is then replaced by other species over time. 5. The water cycle involves the constant reuse of water. 6. The final stage of succession is a(n) climax community . 7. Fish and other active swimmers in a body of water are nekton part of the category called © Macmillan/McGraw-Hill 8. The world’s largest biome is the . taiga . 9. The boundary where a river feeds into the ocean is a(n) estuary 10. A(n) . biome grouped together as one. Chapter 4 • Ecosystems and Biomes Assessment includes many ecosystems Use with Chapter 4 51 Chapter Test B Name Date Circle the letter of the best answer for each question. 11. The formation of a new community where another community already exists is known as A primary succession. B secondary succession. C pioneer community. D pioneer species. 12. Which biome has no trees and 14. A pioneer species that often makes up a pioneer community is A moss. B soil. C a squirrel. D a robin. 15. A mixture of dead organic is frozen year round? material that can be used as a fertilizer is called A tundra A decomposition. B taiga B runoff. C desert C compost. D grassland D legumes. 13. Which ocean zone is the shallowest? A abyssal B intertidal C bathyal © Macmillan/McGraw-Hill D neritic 52 Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 Name Chapter Test B Date Answer the following questions. 16. Interpret Data Look at the graph below. What biome do you think these temperatures reflect? Explain your answer. El-Oasr el-Akhdar, Egypt This graph probably shows a desert biome. A desert biome has very warm temperatures all year round. 17. Classify In the chart below, list at least two things that can be found in each stage of primary succession. (Stage 1 only needs one item listed.) Stage 1 Stage 2 Stage 3 Stage 4 rock lichen, mosses small plants, lichen, grasses shrubs, trees 18. Make a Model In the space below, draw a simple model © Macmillan/McGraw-Hill of the carbon cycle. Student model should include plants absorbing carbon dioxide from the air, herbivores and/or omnivores that eat the plants, and carnivores that eat the herbivores or omnivores. Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 53 Chapter Test B Name Date Answer the following questions. 19. What are three reasons a species may become extinct? Pollution, overhunting, disease, loss of habitat, and introduction of new organisms to an ecosystem can all cause a species to become extinct. 20. What are some differences between a deciduous forest and a temperate rain forest? A deciduous forest has four distinct seasons but a temperate rain forest does not. A temperate rain forest has mild winters and cool summers and has many large evergreen trees that do not lose their leaves. 21. Critical Thinking Look at the map below. Why is much of the Gulf Coast area of Louisiana marsh land? Marshes form where fresh water and salt water meet. This has happened in Louisiana because it is where the Mississippi River (fresh water) flows into the Gulf of Mexico (salt water). 22. Thinking Like a Scientist Why do algae do well in an Slow-moving water has less oxygen and is rich in nutrients; algae thrives in such an ecosystem. Also, algae does not have roots, so it can float on top of the water and absorb sunlight. 54 Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 © Macmillan/McGraw-Hill ecosystem with slow-moving water? Name Performance Assessment Date Saving Life on Earth, One Species at a Time Objective: Students will research why a particular species of plant or animal is endangered and create a poster outlining a plan for saving that species. Materials • poster board • pencil • markers or crayons Scoring Rubric points Student chooses a plant or animal species that is endangered. Student’s poster includes a picture of the plant or animal, an accurate description of it, and clear information about why the plant or animal is endangered. Student writes a plan for saving that plant or animal in a clear, concise manner. points Student chooses a plant or animal species that is endangered. Student’s poster includes a picture of the plant or animal, a description that is mostly accurate, and information about why the plant or animal is endangered that is mostly clear and accurate, but may contain a few inaccuracies. Student writes a plan for saving that plant or animal that is mostly clear and concise. © Macmillan/McGraw-Hill points Student chooses a plant or animal species that is endangered. Student creates a poster that includes a picture of the plant or animal and a description that is only partially accurate. Student includes information about why the plant or animal is endangered that is not clear or is inaccurate. Student writes a plan for saving that plant or animal that is difficult to understand. point Student chooses a plant or animal that is not an endangered species. Student does not create a poster that includes a picture of the plant or animal. Student’s description of the plant or animal is incorrect. Student does not include information about why the animal is endangered. Student does not write a plan for saving the plant or animal from extinction. Student does not answer the Analyze the Results questions. Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 55 Performance Assessment Name Date Saving Life on Earth, One Species at a Time Communicate Many species of plants and animals around the world are endangered. Do some research to learn about an endangered plant or animal species that interests you. Make a poster about that plant or animal that includes a picture of the plant or animal, a description, information about why it is endangered, and a plan for saving it from extinction. Analyze the Results 1. What is the most common cause of animals and plants becoming endangered? Why is it so common? Habitat destruction is the most common cause of species becoming endangered. This is common because people are constantly taking over land that was once occupied by plants and animals. 2. What can be done to save a species that is endangered due to overhunting? Answers will vary but may include: Governments can place restrictions on the number of animals of a particular species that can 3. Why is it a problem to introduce a new animal species into an ecosystem? When a new species is brought into an ecosystem, it can take away the food supply from another animal. 56 Chapter 4 • Ecosystems and Biomes Assessment Use with Chapter 4 © Macmillan/McGraw-Hill be hunted each year. Name Chapter Test A Date Our Dynamic Earth Write the word that best completes each sentence in the spaces below. Words may be used only once. atmosphere fault landform earthquake geologist lava erosion hot spot magnitude 1. A physical feature on Earth’s surface is a(n) 2. The atmosphere 3. A(n) geologist volcano landform . consists of gases around and above Earth. is a scientist who studies the structure and history of Earth. 4. An opening in Earth’s crust out of which magma flows is volcano a(n) . 5. A material that comes up through Earth’s surface and lava hardens is called . 6. An unmoving pool of magma below Earth’s crust is hot spot called a(n) . 7. The sudden movement of Earth’s crust is called a(n) © Macmillan/McGraw-Hill earthquake 8. A(n) 9. The fault . is a crack in Earth’s crust. magnitude of an earthquake is a measure of the amount of energy released. 10. The movement of pieces of weathered rock from one place to another is Chapter 5 • Our Dynamic Earth Assessment erosion . Use with Chapter 5 57 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. Scientists have discovered that the mountains on the east coast of South America closely match the mountains on the west coast of Africa. How can two landforms that are so far apart be related? A continental drift 13. Which drawing below shows a cinder-cone volcano? A B B earthquakes C erosion D volcanic eruptions C 12. Trenches, rift valleys, and abyssal plains are all A features of topographical maps. D B features of the ocean floor. C examples of water features. D examples of land features. 14. A giant wave caused by an earthquake under the ocean is a(n) A focus. B Mercalli. D epicenter. 15. Which of the following causes chemical weathering? A ice B wind C water D acid rain 58 Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 © Macmillan/McGraw-Hill C tsunami. Name Chapter Test A Date Answer the following questions. 16. Make a Model Label this model of the layers of Earth. crust mantle atmosphere hydrosphere core 17. Communicate Explain how erosion and deposition work together using running water. Water runs down the side of a hill or mountain. As it moves, it picks up bits of rocks and soil. This erodes the land. When the water slows down because it flows into a larger body of water, it deposits the rocks and soil it picked up earlier. This causes the land to be built up. 18. Infer Scientists have found that throughout history, the © Macmillan/McGraw-Hill majority of erupting volcanoes have occurred along plate boundaries. Why do you think volcanoes are more likely to erupt along plate boundaries than in other locations? The plates of Earth’s crust move. When the plates move, some rocks can break away and fall into the mantle where magma is formed. This movement increases the likelihood that magma will build up and have to be pushed out of the volcano through an eruption. Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 59 Chapter Test A Name Date Answer the following questions. 19. How can an earthquake be compared to tossing a rock into a pond? An earthquake has a spot where slipping begins, called a focus. The spot where a rock hits the water in a pond is similar to a focus because waves travel outward in all directions from that spot; in the same way water moves when you toss a rock into a pond. 20. What do earthquakes and volcanoes have in common? They both occur most often near the edges of tectonic plates. 21. What is the difference between the Mercalli Scale and the Richter Scale? The Richter Scale measures the amount of energy released by an earthquake. The Mercalli Scale measures the effects of an earthquake. Use this drawing to answer questions 22 and 23. shown in the picture above. It is a beach because the picture shows sand sloping up from an ocean. 23. Thinking Like a Scientist Scientists want to protect the landform shown above from erosion. What can they do? The scientists can put up fencing, plant grasses, and build a water barricade that will help hold the sand in place and slow the water down. 60 Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 © Macmillan/McGraw-Hill 22. Critical Thinking Explain what type of landform is Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Small streams that start in the mountains and join larger streams are called 3. Which part of Earth is made of rock that is close to its melting point? A oceans. A crust B tributaries. B lithosphere C rivers. C asthenosphere D waterfalls. D lower mantle 2. The largest landform beneath the ocean is the A ocean basin. B sea mount. C continental shelf. D mid-ocean ridge. 4. Earth’s outer core is made of A solid rock. B liquid rock. C solid metal. D liquid metal. Critical Thinking Is Earth’s mantle part of the biosphere? Why or why not? No. The biosphere is made up of all the parts of Earth that contain © Macmillan/McGraw-Hill living things. There are no living things in the mantle. Chapter 5 • Our Dynamic Earth Assessment Use with Lesson 1 Earth’s Landforms 61 Lesson 2 Test Name Date Circle the letter of the best answer for each question. 1. A geologist is a scientist who studies A plate tectonics. 3. The force that occurs when plates are pushed together is called B Earth’s structure and A compression. C oceans and mountains. C continental drift. D differences between the D shear. history. continents. 2. All of the following types of information show that continental drift has occurred except A animal fossils. B the shape of coastlines. C the depth of oceans. B folding. 4. The force that twists, tears, or pushes one part of the crust past another is called A compression. B shear. C folding. D plate tectonics. D the age and type of mountains. Critical Thinking The model of plate tectonics states that magma deep within Earth rises toward the surface, resulting in plate tectonics. Why does magma rise? The magma rises because it is hot. Hot materials are less dense than colder materials. This makes them rise above the denser, colder materials, © Macmillan/McGraw-Hill the way hot air balloons rise through the atmosphere. 62 Chapter 5 • Our Dynamic Earth Assessment Use with Lesson 2 Plate Tectonics Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. Where is the Ring of Fire? 3. A caldera forms when A around the Pacific Ocean A a volcano erupts. B around the Atlantic Ocean B a hot spot develops. C along the mid-Atlantic C magma hardens in vertical D along the eastern United D a volcano collapses. Ridge States 2. Volcanoes tend to erupt at places where A two plates collide. B two plates rub past each other. C one plate moves under cracks. 4. The Aleutian Islands are an example of a(n) A hot spot. B island arc. C composite volcano. D tectonic plate. another. D one plate moves away from another. Critical Thinking Does geology affect history? How might the history of the United States be different if the first European settlements had occurred on the west coast instead of the east coast? Most students will say that geology does affect history. For example, if the first settlers had gone to the Pacific Northwest, they might have © Macmillan/McGraw-Hill abandoned the area because of frequent volcanic eruptions. Chapter 5 • Our Dynamic Earth Assessment Use with Lesson 3 Volcanoes 63 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. The place where Earth’s slipping motion begins is called an earthquake’s A epicenter. B fault. C plate. D focus. 2. The epicenter of an earthquake is the place on the surface A where the slipping begins. 3. To pinpoint an earthquake’s location, scientists need information from how many seismometers? A 1 B 2 C 3 D 4 4. Which of the following is the safest place to be during an earthquake? B where the damage is A in a large truck C that is directly above the C under a car greatest. focus. D that is on the nearest plate B in a basement D under a strong table boundary. Critical Thinking Why do you think English speakers use a Japanese word to name the huge waves caused by earthquakes? Japan has many earthquakes and thus experiences many tsunamis. Therefore, English speakers have adopted the commonly used © Macmillan/McGraw-Hill Japanese word tsunami. 64 Chapter 5 • Our Dynamic Earth Assessment Use with Lesson 4 Earthquakes Name Lesson 5 Test Date Circle the letter of the best answer for each question. 1. Which of the following causes chemical weathering? 3. Which of the following can help prevent mudslides? A ice A rain B tree roots B plants C wind C wind D pollution D sand 2. Which of the following is not a cause of erosion? 4. Walls built to hold water back are called A heat A levees. B gravity B wetlands. C wind C deltas. D running water D dunes. Critical Thinking Label the meander and delta in this diagram. Explain where erosion is most likely to take place, and where deposition will occur. meander © Macmillan/McGraw-Hill delta Student should label diagram correctly and explain that erosion is likely to take place on the outer side of the meanders, and deposition is most likely to occur along the inner sides and at the delta. Chapter 5 • Our Dynamic Earth Assessment Use with Lesson 5 Shaping Earth’s Surface 65 Chapter Test B Name Date Our Dynamic Earth Write the word that best completes each sentence in the spaces below. Words may be used only once. atmosphere fault landform earthquake geologist lava erosion hot spot magnitude volcano 1. When magma comes up through Earth’s surface and lava hardens it is called . 2. A stationary pool of magma that forms below Earth’s hot spot crust is called a(n) . fault 3. A crack in Earth’s crust is called a(n) . 4. The process by which weathered rock moves from one erosion place to another is . 5. The amount of energy released by an earthquake is called magnitude . 6. The gases around and above Earth make up Earth’s atmosphere . 7. A mountain is an example of a(n) landform Earth’s surface. on is a(n) geologist © Macmillan/McGraw-Hill 8. A person who studies the history and structure of Earth . 9. Magma flows through an opening in Earth’s crust called a(n) volcano . 10. The sudden movement of Earth’s crust is a(n) 66 Chapter 5 • Our Dynamic Earth Assessment earthquake . Use with Chapter 5 Name Chapter Test B Date Circle the letter of the best answer for each question. 11. Abysmal plains, trenches, and rift valleys are all 13. How do scientists explain the A examples of water fact that some landforms that are far apart and separated by oceans appear to be related? B examples of land features. A earthquakes features. C features of the ocean floor. D features of topographical maps. 12. Which drawing below shows a shield volcano? A B continental drift C volcanic eruptions D erosion 14. Which of the following is an important factor in chemical weathering of rocks? A water B wind C acid rain B D ice 15. What can occur as a result C of an earthquake that erupts under the ocean? A a focus B an epicenter C a Mercalli D a tsunami © Macmillan/McGraw-Hill D Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 67 Chapter Test B Name Date Answer the following questions. 16. Communicate Explain how erosion and deposition work together using waves. Waves can wash the sand off of beaches. The waves pick up the sand, eroding away the land in that area. The currents in the water can carry the sand to a different area of the beach. When the waves hit this area, they deposit the sand, causing the land to be built up. 17. Make a Model Draw a circle. This circle represents Earth if it were cut in half. Inside the circle, draw Earth’s layers. Make sure you show approximately how thick each layer should be. Include the atmosphere, core, crust, hydrosphere, and mantle. Student correctly draws and labels the atmosphere, core, crust, hydrosphere, and mantle. Why do you think this is so? Volcanoes are most likely to erupt along the boundaries of Earth’s plates. The plates of Earth’s crust move. When the plates move, some rocks can break away and fall into the mantle where magma is formed. This movement increases the likelihood that magma will build up and have to be pushed out of the volcano through an eruption. 68 Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 © Macmillan/McGraw-Hill 18. Infer Where are volcanoes most likely to erupt on Earth? Name Chapter Test B Date Answer the following questions. 19. Match the letter of each characteristic with the activity it describes. One characteristic matches both volcanoes and earthquakes. C D E A B D Volcano: Earthquake: A. magma flows through it B. has at least one vent C. caused by rocks moving along a fault D. occurs most often near the edges of tectonic plates E. the place where it begins is called the focus 20. How are the Mercalli Scale and the Richter Scale similar? How are they different? Both scales measure earthquakes or events related to earthquakes. The Richter Scale measures energy released by an earthquake (magnitude). The Mercalli Scale measures the damage of an earthquake. 21. What happens during an earthquake? Forces in Earth push and pull the rocks around the fault, causing them to slip. This slipping causes the surface of Earth to move. 22. Critical Thinking Describe a delta. Explain how this type of landform is created. A delta is where a river meets the ocean and land is formed. A delta © Macmillan/McGraw-Hill is formed when the running water of a river picks up soil and rocks and deposits them where the river meets the ocean. 23. Thinking Like a Scientist A group of scientists wants to protect a delta. What can they do to prevent erosion caused by running water? To prevent erosion to deltas scientists can use dams to control the speed of flowing water. They can build levees to control water direction. Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 69 Performance Assessment Name The Ring of Fire Objective: Students will create travel brochures to show locations where volcanoes are found in the Ring of Fire, describe the different kinds of volcanoes, and explain how they form. Scoring Rubric Date Materials • drawing paper • pencil • crayons or colored pencils points Student creates a travel brochure that • ruler accurately shows the locations of volcanoes in the Ring of Fire. Student clearly describes the types of volcanoes to another student and accurately explains how each type forms. Student clearly explains his or her answers to the questions in Analyze the Results. points Student creates a travel brochure that accurately shows the locations of volcanoes in the Ring of Fire. Student clearly describes two types of volcanoes to another student and accurately explains how at least two types of volcanoes form. Answers to the questions in Analyze the Results are mostly correct, but contain a few errors. point Student does not include a map that accurately shows the location of volcanoes in the Ring of Fire. Student does not clearly describe any type of volcano to another student and does not explain accurately how any type of volcano forms. Student does not answer the questions in Analyze the Results. 70 Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 © Macmillan/McGraw-Hill points Student creates a travel brochure that accurately shows the locations of a few of the volcanoes in the Ring of Fire. Student clearly describes one type of volcano to another student and accurately explains how one type of volcano forms. Answers to the questions in Analyze the Results are mostly incorrect. Name Date Performance Assessment The Ring of Fire Communicate You are a travel agent preparing to take a group of sightseers on a trip to see the volcanoes in the Ring of Fire. Your job is to create a brochure that will give the sightseers some information about the Ring of Fire. The brochure should include a map showing where volcanoes are found in the Ring of Fire. You will also meet with a “client” before the trip to share what you know about different kinds of volcanoes and how they are formed. Analyze the Results 1. What causes a volcano to erupt? Magma forms in Earth’s mantle. The magma rises into the crust and heats the rocks until they melt. The pressure from the magma may become too great, causing it to move upward until it pushes through Earth’s surface through a vent. 2. How do volcanoes build land? When magma breaks through Earth’s surface it is called lava. The lava cools and hardens, increasing the height of a volcano. As more eruptions occur, the lava builds up so much that a mountain can form. Different types of volcanoes form mountains with different © Macmillan/McGraw-Hill sizes and shapes. Students may also respond that volcanoes build islands after repeated underwater eruptions. Chapter 5 • Our Dynamic Earth Assessment Use with Chapter 5 71 Chapter Test A Name Date Protecting Earth’s Resources Write the word or words that best complete each sentence in the spaces below. Words may be used only once. alternative energy sources mineral sedimentary rock era ozone soil horizons fossils pollution luster rock cycle 1. A solid material found in the ground that is made of elements is a(n) mineral . 2. Rocks change from one type to another over time in a process called the 3. A(n) rock cycle sedimentary rock . forms in layers. 4. No matter where it is found, soil is divided into three soil horizons . 5. The harmful addition of materials to soil, air, or water is pollution called . fossils 6. The remains of ancient organisms in rock are . 7. A unit of time that is measured in millions of years is a(n) . 8. Wind, moving water, and solar energy are all 9. The way a mineral reflects light is called its alternative energy sources luster . . 10. A layer of gas that surrounds Earth and protects living things from the Sun is the 72 Chapter 6 • Protecting Earth’s Resources Assessment ozone . Use with Chapter 6 © Macmillan/McGraw-Hill era Name Chapter Test A Date Circle the letter of the best answer for each question. 11. What type of rock forms when lava from a volcano hardens? 14. Which fossil is the youngest? A sedimentary B igneous 1 C crystal D metamorphic 2 12. A type of pollution caused by particles in the air is called 3 A fog. 4 B sediment. C smog. D precipitation. 13. Which of the following is a type of fossil fuel? A anthracite B biomass C solar D geothermal A 1 B 2 C 3 D 4 15. What is an aquifer? A a type of water treatment plant B a salty ocean C an artificial lake D an underground body of © Macmillan/McGraw-Hill water Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 73 Chapter Test A Name Date Answer the following questions. 16. Interpret Data One type of soil has a thin layer of topsoil and very little humus. The minerals in this soil are carried deep into the ground by heavy rainfalls. What type of soil is being described and why is it not suitable for growing crops? Forest soil is not good for growing crops because the heavy rains force minerals deep into the ground. The roots of crops cannot get down far enough into the ground to reach those minerals. 17. Classify Match each type of rock with its description. Sedimentary Rock magma or lava that has cooled and hardened Metamorphic Rock rock formed by bits of sand, dust, shells, and soil Igneous Rock rock formed by other rocks that are changed by heat and pressure to people. Answers will vary but may include: Reservoirs are necessary because they help people control and monitor their fresh water supply. 74 Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 © Macmillan/McGraw-Hill 18. Communicate Explain why reservoirs are so important Name Chapter Test A Date Answer the following questions. 19. Name and describe two ways people use fossil fuels. People use oil, a fossil fuel, for heating and to power their cars in the form of gasoline. People use natural gas for heating and to run appliances such as stoves. People use coal to create electricity. 20. The soil horizon is divided into three layers. Which layer contains humus? Why do you think this layer contains more humus than the other layers? The A horizon, on the top layer, contains humus. Humus is made up of decayed plant and animal materials and not many of these materials reach the B horizon. None of these materials reach the C horizon. 21. How can someone find the absolute age of a fossil? The person would have to find out the absolute age of the rock the fossil is found in, because the rock and the fossil formed at the same time. The age of the rock is determined by the elements that make up the rock. 22. Critical Thinking What can farmers do to prevent wind from blowing soil away? Farmers can use strip farming, which involves planting rows of grass between rows of crops. They can plant tall trees along the edges of © Macmillan/McGraw-Hill farmland to act as wind breaks. 23. Thinking Like a Scientist While out on a hike, you find an unknown mineral. How would you test the mineral to find out what it is? Answers will vary but may include: I would look at the color, streak, and luster of the mineral. I would test the hardness by scratching the mineral with a known mineral. I might break the mineral to see whether it has smooth or rough surfaces when it breaks. Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 75 Lesson 1 Test Name Date Circle the letter of the best answer for each question. 1. A solid geometric shape formed by a mineral is a(n) A rock. B ore. C crystal. D sediment. 2. A mineral that has uneven surfaces when broken is said to have A cleavage. B hardness. C luster. D fracture. 3. What type of rock is formed after magma or lava cools and hardens? A sedimentary rock B igneous rock C metamorphic rock D a meteorite forms 4. Which step in the rock cycle occurs before sediments are laid down? A layers form B heat and pressure are applied C lava cools D erosion breaks down rock Critical Thinking A student finds a rock that has seashells in it. What kind of rock is it? Explain your answer. It is most likely a sedimentary rock. Sedimentary rocks form when sediments gather at the bottom of bodies of water. Therefore, a rock with © Macmillan/McGraw-Hill seashells in it is most likely a sedimentary rock. 76 Chapter 6 • Protecting Earth’s Resources Assessment Use with Lesson 1 Minerals and Rocks Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. Which soil layer contains the most nutrients? 3. How does crop rotation help preserve soil? A It holds water near the A roots of plants. B It keeps soil from blowing away. B C C It removes soil nutrients. D It returns nutrients to soil. 4. Which of the following is the A A B B C C best description of forest soil? A thin humus layer, minerals deep beneath the surface B thin humus layer, minerals close to the surface D D 2. Compared with topsoil, subsoil has A more water. C very little humus, rich in minerals D very little humus, few B less water. minerals C more humus. D less humus. © Macmillan/McGraw-Hill Critical Thinking Explain why soil conservation is important even to people who do not live on a farm. Answers will vary but may include: Soil conservation is important because everybody gets food from soil; forests, which clean the air and store greenhouse gases, need soil to grow as well. Chapter 6 • Protecting Earth’s Resources Assessment Use with Lesson 2 Soil 77 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. Which of the following is not a fossil fuel? 3. The energy in fossil fuels comes from A oil A sugars made by plants. B natural gas B solar energy stored by plants. C coal C soft and hard coal. D solar energy 2. Which rock layer is youngest? D oil and natural gas. 4. Which of the following is a living renewable resource? A sunlight B water C trees D wind A limestone B lava C shale D sandstone Critical Thinking List at least three ways to conserve nonrenewable resources. Answers will vary but may include: turn down the thermostat; turn off lights and appliances when not in use; use public transportation; buy heads or take shorter showers; turn water off when not in use; seek out alternative energy sources. 78 Chapter 6 • Protecting Earth’s Resources Assessment Use with Lesson 3 Fossils and Energy © Macmillan/McGraw-Hill energy-saving appliances and light bulbs; use water-conserving shower Name Lesson 4 Test Date Circle the letter of the best answer for each question. 1. Use the table to answer question 1. Average Household Water Use Per Day Use Number of gallons flushing toilets 81 washing clothes 60 showers 53 faucets 44 Approximately how many gallons does an average household use each day for showers and for the toilet? A 81 B 97 C 134 D 141 2. In a water treatment plant, what happens during coagulation? A Sticky particles are added 3. Why are holes in Earth’s ozone layer a problem? A They add pollution to the air. B They enlarge Earth’s atmosphere. C They allow dangerous rays from the Sun to reach Earth’s surface. D They allow dangerous chemicals to escape into the atmosphere. 4. All of the following are ways to save water except A watering plants every day. B using efficient appliances. C running appliances only when full. D drinking tap water. to water to attract dirt. B Dirt and other materials fall to the bottom of the tank. C The water is filtered. © Macmillan/McGraw-Hill D Chlorine is added to the water. Critical Thinking What causes smog? Explain at least two ways that people can avoid causing smog. Smog is caused by burning fossil fuels such as gas and coal. People can avoid causing smog by using fewer fossil fuels by buying energy-efficient cars, using efficient appliances and light bulbs, and walking instead of driving. Chapter 6 • Protecting Earth’s Resources Assessment Use with Lesson 4 Air and Water 79 Chapter Test B Name Date Protecting Earth’s Resources Write the word or words that best complete each sentence in the spaces below. Words may be used only once. aquifer pollution soil fossils renewable resources topsoil hardness reservoir metamorphic rock rock cycle 1. A mixture of pieces of rock and parts of once-living soil plants and animals is called 2. Acid rain is a type of . pollution . 3. When igneous and sedimentary rock are exposed to heat and pressure, metamorphic rock may form. 4. The measure of how well a mineral resists scratching is called hardness . 5. A sedimentary rock may change to an igneous rock as part of a process called the rock cycle . 6. Fish and forests are examples of renewable resources . reservoir 7. A human-made lake that stores water is a(n) . fossils are the same age as the rocks in which they are found. topsoil 9. Most plant roots grow in . 10. An underground layer of rock with pores that can absorb water is called a(n) 80 aquifer Chapter 6 • Protecting Earth’s Resources Assessment . Use with Chapter 6 © Macmillan/McGraw-Hill 8. Remnants or impressions in rocks called Name Chapter Test B Date Circle the letter of the best answer for each question. 11. Which type of soil has a thin layer of topsoil and a small amount of humus? A forest soil B prairie soil C grassland soil D desert soil 12. In what type of rock are fossils 14. What percentage of Earth’s water is liquid fresh water? A 0.01% B 0.06% C 2.3% D 97% 15. What type of rock forms when usually found? bits of dirt, dust, sand, and soil are pressed together? A metamorphic A igneous B crystal B metamorphic C sedimentary C crystal D igneous D sedimentary 13. A fossil is found in a layer of rock. This layer of rock determines the fossil’s age. This demonstrates A absolute age B relative age C superposition © Macmillan/McGraw-Hill D half-life Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 81 Chapter Test B Name Date Answer the following questions. 16. Classify Look at the rocks. Label each rock as metamorphic, igneous, or sedimentary. This rock is made of layers. This rock is produced by a volcano. This rock is formed by heat and pressure. sedimentary igneous metamorphic 17. Communicate Some people do not live near rivers or lakes. Where do they get their drinking water from? How do they get to it? They drink groundwater. Groundwater is found beneath Earth’s surface in aquifers. An aquifer is a layer of rock with pores that can absorb water. The water builds up to form a water table. People can get the water by drilling down into the water table and pumping the water out, or by digging a well that reaches the water table. humus that contains a lot of nutrients. The humus also holds the water from rainfall. What type of soil is it and why is it good for growing crops? Prairie or grassland soil is good for growing crops because the humus contains the nutrients crops need. Since the humus holds water, there is plenty of water for the roots of plants to soak up. 82 Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 © Macmillan/McGraw-Hill 18. Interpret Data One type of soil has a great deal of Name Chapter Test B Date Answer the following questions. 19. Why are fish considered a living renewable resource? Fish populations can be used and replaced, but care must be taken so that populations will not be used up before they can be replenished. 20. How are oil and natural gas formed? Oil and natural gas are formed from parts of decayed ocean plants and animals buried in the ocean floor. Over many years, a combination of pressure, heat, and bacteria turns the decayed materials into oil and natural gas. 21. Which layer of the soil horizon does not contain any humus? What does this layer contain? The C horizon; it is made mostly of larger pieces of weathered rock. 22. Critical Thinking How can fossils help scientists determine if the climate in a region has changed drastically over time? Answers will vary but may include: Scientists use what they know about modern organisms and their environments and compare them to fossils that they find. If warm climate organisms’ fossils are found in © Macmillan/McGraw-Hill a cold climate, scientists know that the climate has changed drastically. 23. Thinking Like a Scientist Suppose a scientist found an unusual unknown rock. What tests should the scientist conduct? Answers will vary but may include: The scientist should look at the rock’s color, luster, and if it leaves a streak. The scientist should also test for hardness by scratching the rock with a known rock. Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 83 Performance Assessment Name Energy for the Future Objective: Students will write a persuasive letter describing the benefits of an alternative energy source. Date Materials • writing paper and pencil Scoring Rubric points Student chooses a type of alternative energy source that he or she think is best for the school. Student writes a persuasive letter to the school principal. In the letter, student describes clearly and accurately how the alternative energy source works. Student describes the benefits of this energy source, giving at least three reasons why the energy source is a good choice for the school. points Student chooses a type of alternative energy source that he or she thinks is best for the school. Student writes a persuasive letter to the school principal. In the letter, student describes clearly and accurately how the energy source works with only one or two errors. Student describes the benefits of this energy source, giving two reasons why the energy source is a good choice for their school. © Macmillan/McGraw-Hill points Student chooses a type of alternative energy source that he or she thinks is best for the school. Student writes a persuasive letter to the school principal. In the letter, student attempts to describe how the energy source works, but makes several mistakes in the explanation. Student attempts to describe the benefits of this energy source, giving one reason why the energy source is a good choice for the school. point Student does not write a persuasive letter to the school principal, or the letter does not accurately explain how the alternative energy source works. Student does not explain the benefits of the energy source and does not provide any reasons why the energy source is a good choice for the school. Student does not answer the questions in Analyze the Results. 84 Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 Name Performance Assessment Date Energy for the Future Communicate Your school principal has asked you to do some research about alternative energy sources for the school. Choose the alternative energy source that you think would best meet the needs of your school for many years to come. Write a persuasive letter to the principal describing the alternative energy source. Explain the benefits of the energy source and give three reasons why it is the best choice for your school. Be sure to use proper letter format. Analyze the Results 1. Why might energy from wind not always be the most reliable energy choice? Name two places that have had some success with wind energy. Wind energy can only be used in places where wind blows on a very regular basis. Some places are: California, Hawaii, Denmark, the Netherlands, Spain, and India. 2. Why should people plan on not using fossil fuels forever? Fossil fuels are nonrenewable resources. They will eventually run out, © Macmillan/McGraw-Hill and people will have to find other sources of energy. Chapter 6 • Protecting Earth’s Resources Assessment Use with Chapter 6 85 Chapter Test A Name Date Weather Patterns Write the word or words that best complete each sentence in the spaces below. Words may be used only once. air mass current insolation barometer El Niño tornado blizzard global winds weather weather map 1. The solar energy that reaches Earth’s surface is called insolation . 2. Every two to seven years a change in weather conditions El Niño known as a(n) causes heavy rains and storms in North and South America. 3. A(n) air mass 4. A(n) barometer measures atmospheric pressure. 5. A(n) current is a constant movement of ocean that forms over a warm area of water will be warm and humid. water. 6. A rotating funnel-shaped cloud with high winds is a(n) tornado . 7. The condition of the atmosphere at a specific time and weather . 8. A kind of storm that includes high winds and snow is a(n) blizzard . 9. A tool used to show the weather in a specific area is a(n) weather map . 1 0. Uneven heating of Earth causes global winds 86 Chapter 7 • Weather Patterns Assessment . Use with Chapter 7 © Macmillan/McGraw-Hill place is the Name Chapter Test A Date Circle the letter of the best answer for each question. 11. All weather occurs in Earth’s A thermosphere. B troposphere. C stratosphere. D exosphere. 12. Which term describes the amount of water vapor in the air? A air pressure B atmospheric pressure C humidity D barometer 13. The meeting place between two air masses is a 14. Which carries warm water from near the equator toward the poles? A tornados B the Gulf Stream C El Niño D global winds 15. Any storm with a low- pressure center that causes a circular wind pattern is a A cyclone. B blizzard. C tornado. D hurricane. A storm. B global wind. C temperature. © Macmillan/McGraw-Hill D front. Chapter 7 • Weather Patterns Assessment Use with Chapter 7 87 Chapter Test A Name Date Answer the following questions. 16. Communicate What creates a valley breeze? In the morning, sunlight warms mountain slopes. As the warm air rises, cool air from the valley moves up to take its place, creating a valley breeze. 17. Classify What are the three main climate zones on Earth? In the chart below, describe each climate zone. Climate Zone tropical climate zone Description near the equator, receives the most insolation from the sun, high temperatures, heavy precipitation temperate climate zone north and south of the equator, warm summers, cool or cold winters, can get all types of precipitation polar climate zone near the north and south poles, short summers and long cold winters, not much precipitation climate of a region? In general, being near a large body of water keeps temperatures cooler in the summer and warmer in the winter. 88 Chapter 7 • Weather Patterns Assessment Use with Chapter 7 © Macmillan/McGraw-Hill 18. How can being near a large body of water affect the Name Chapter Test A Date Answer the following questions. 19. When does a tropical storm become classified as a hurricane? Tropical storms become classified as hurricanes when their wind speeds reach 119 kilometers per hour (74 miles per hour). 20. Critical Thinking What kind of weather can be expected with a low-pressure system? Warm and humid air has lower pressure than cold, dry air, so lowpressure systems usually are associated with warm and rainy or stormy weather. 21. Thinking Like a Scientist A meteorologist predicts that it will rain today. The air temperature is warm, but a layer of very cold air is approaching. What type of precipitation might fall? Answers will vary but may include: If the rain falls through a layer of very cold air, it may become sleet. If it is a severe thunderstorm with © Macmillan/McGraw-Hill high winds, hail might form. Chapter 7 • Weather Patterns Assessment Use with Chapter 7 89 Lesson 1 Test Name Date Circle the letter of the best answer for each question. 1. Insolation refers to 3. The lowest layer of the A the amount of sunlight that atmosphere is the B the amount of heat energy B stratosphere. reaches a planet. A troposphere. contained in a beam of sunlight. C mesosphere. D ionosphere. C the imaginary line that runs around Earth’s middle. 4. The Coriolis effect refers to a change in direction caused by D the spherical shape of Earth. A heat. 2. How much of the Sun’s energy is absorbed or reflected by clouds? B wind. C insolation. D rotation. A 20 percent B 25 percent C 45 percent D 50 percent Critical Thinking The following table shows air temperature over land and water in a coastal area at two different times of the same day. Time Temperature over land Temperature over water noon 32° 18° midnight 24° 15° Explain what causes the differences in temperature. Temperature over land fluctuates more than temperature over water because the land heats up more rapidly during the day and cools down more rapidly at night. 90 Chapter 7 • Weather Patterns Assessment Use with Lesson 1 The Atmosphere and Weather © Macmillan/McGraw-Hill Air Temperature in degrees C. Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. A front is a place where A precipitation occurs. B two air masses meet. C air is moist and cold. D air is hot and dry. 2. A low-pressure system will arrive tomorrow. The weather will be A hot and dry. B cold and dry. C warm and rainy. D cold and rainy. 3. On a weather map, an isobar connects places with the same A temperature. B precipitation. C air pressure. D clouds. 4. The high-altitude wind that blows from west to east over the United States is the A trade wind. B westerly. C tropical wind. D jet stream. Critical Thinking After learning about weather, Vanessa says, “This is easy. It’s all just another lesson about density. Cold air masses are denser than warm ones, so when air masses meet, weather changes.” What other factors has she not considered? Possible answer: The movement of air masses is based on density. However, many other factors, such as prevailing winds and insolation, © Macmillan/McGraw-Hill affect weather as well. Chapter 7 • Weather Patterns Assessment Use with Lesson 2 Clouds and Precipitation 91 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. The noise of thunder is caused by 3. Tornadoes begin to form inside of A rapid expansion of air. A hurricanes. B clouds rushing past each B thunderheads. other. C rain hitting the ground. D two air masses colliding. 2. Heavy snowfall combined with blowing snow result in a(n) C blizzards. D cyclones. 4. Look at the picture of the hurricane. A ice storm. B cold air mass. C ground blizzard. D whiteout. Which part of the hurricane is the eye? A A B B D D Critical Thinking How does tracking severe storms help people? Tracking allows meteorologists to predict how severe a storm will be and where is it likely to affect people. This helps people prepare for the storm or to leave the area before it hits. 92 Chapter 7 • Weather Patterns Assessment Use with Lesson 3 Severe Storms © Macmillan/McGraw-Hill C C Name Lesson 4 Test Date Circle the letter of the best answer for each question. 1. Which factor is most important in determining climate? 3. Burning fossil fuels contributes to global warming by A longitude A raising air temperatures. B latitude B increasing precipitation over oceans. C rainfall D temperature 2. The map shows climate zones of the world. 1 C changing wind patterns. D adding greenhouse gases to the atmosphere. 4. The warm current that flows 3 across the Atlantic toward Europe is called 4 A El Niño. 3 B the jet stream. 2 C the Gulf Stream. 2 1 D the South Atlantic current. Which part of the map shows the temperate zones? A 1 B 2 C 3 © Macmillan/McGraw-Hill D 4 Critical Thinking How do ocean currents affect climate? Give at least one example. Ocean currents affect climate by making land areas warmer or cooler than they would otherwise be, based on their latitude alone. For example, the Gulf Stream carries warm water to the coast of Europe and warms the climate. Chapter 7 • Weather Patterns Assessment Use with Lesson 4 Climate 93 Chapter Test B Name Date Weather Patterns Write the word or words that best complete each sentence in the spaces below. Words may be used only once. air mass climate precipitation air pressure hurricane rain shadow blizzard insolation thunderstorm troposphere 1. The troposphere is a layer of gases between 5 and 11 miles thick. 2. A(n) thunderstorm may occur when warm air rises, carrying moisture with it. 3. Average temperature and average rainfall are two important variables for determining an area’s 4. A(n) blizzard climate . can include several feet of snowfall. 5. The energy from the sun that reaches a planet’s surface insolation is 6. A(n) . air mass is a large region of air with a similar temperature and humidity. hour is a(n) hurricane . 8. Hail, rain, sleet, and snow are all forms of precipitation . 9. The dry area on the leeward side of a mountain is called a rain shadow . 10. At sea level, the average 94 Chapter 7 • Weather Patterns Assessment air pressure is 1.04 kg/cm2. Use with Chapter 7 © Macmillan/McGraw-Hill 7. A storm with winds blowing faster than 74 miles per Name Chapter Test B Date Circle the letter of the best answer for each question. 11. A device with rotating cups that measures wind speed is called a(n) 14. A storm with 35 mile per hour winds, frozen precipitation, and 1/4 mile visibility is a A anemometer. A hurricane. B weather vane. B cyclone. C barometer. C thunderstorm. D aneroid barometer. D blizzard. 12. Which type of storm only forms over large bodies of warm water? A tornado B thunderstorm C hurricane D blizzard 15. Which of these does not affect the climate of a city? A population B ocean currents C mountain ranges D altitude 13. Which layer of the atmosphere is farthest from Earth’s surface? A troposphere B stratosphere C exosphere © Macmillan/McGraw-Hill D thermosphere Chapter 7 • Weather Patterns Assessment Use with Chapter 7 95 Chapter Test B Name Date Answer the following questions. 16. Classify In which climate zone is the equator? In which climate zone is the United States? Describe the climate in each area. The equator is in the tropical climate zone. The climate is warm and wet. The United States is in the temperate climate zone. Summers are warm, and winters are cool or cold. Precipitation falls all year round. 17. Communicate How do clouds form? Clouds form as water vapor particles are carried higher in the atmosphere and they become colder. The water vapor particles lose particles of dust, forming clouds. 18. How does lightning cause the loud boom heard during a thunderstorm? Lightning raises the temperature of the air around it so that air becomes very hot very suddenly. This makes the air expand violently. This expansion causes the sound of thunder. 96 Chapter 7 • Weather Patterns Assessment Use with Chapter 7 © Macmillan/McGraw-Hill speed and get closer together. Then they condense around tiny Name Chapter Test B Date Answer the following questions. 19. What is altitude? What effect does altitude have on climate? Altitude is the height of a location above sea level. Generally, the higher a place is above sea level, the cooler the average temperature. 20. Critical Thinking What kind of weather can you expect with a high-pressure system? High air pressure is associated with cool, dry air. Any moisture that comes into a high-pressure system usually evaporates, so the expected weather will be cool and dry. 21. Thinking Like a Scientist What information does a meteorologist use to create weather maps and make predictions? A meteorologist uses the data collected about temperature, wind speed, wind direction, and air pressure to create weather maps. A meteorologist may use information from a radar to predict when a © Macmillan/McGraw-Hill storm will arrive and how intense it will be. Chapter 7 • Weather Patterns Assessment Use with Chapter 7 97 Performance Assessment Name Storm Safety Objective: Students will describe how a storm forms and what happens during a storm. Students will describe different things people can do to stay safe during a storm. Scoring Rubric Date Materials • white paper • pencil • markers or crayons points Student creates a brochure about a type of storm. The brochure includes accurate information about how the storm forms, what happens during the storm, and the dangers to people during a storm. The brochure also includes safety tips that people can follow during a storm. Student shares information with the class clearly. points Student creates a brochure about a type of storm. The brochure includes mostly accurate information about how the storm forms, what happens during the storm, and the dangers to people during a storm, but some details may be left out. The brochure also includes safety tips, but some tips may be left out. Student shares most information with the class clearly. points Student creates a brochure about a type of storm. The brochure includes little accurate information about how the storm forms, what happens during the storm, and the dangers to people during a storm. The brochure also includes one or two safety tips. Student shares information with the class, but not all information is clear. 98 Chapter 7 • Weather Patterns Assessment © Macmillan/McGraw-Hill point Student creates a brochure about a type of storm, but the information included is inaccurate. The brochure includes no accurate information about how the storm forms, what happens during the storm, and the dangers to people during a storm. The brochure does not include safety tips. Student does not share information with the class. Student does not answer the Analyze the Results questions. Use with Chapter 7 Name Performance Assessment Date Storm Safety Communicate What do you know about blizzards, hurricanes, tornadoes, and thunderstorms? How do these storms form? What happens during one of these storms? What are some storm dangers? What can you do to stay safe during a storm? Choose one of the storms mentioned above. Create a brochure that answers all of these questions. Analyze the Results 1. Is the type of storm you chose to study common where you live? Why or why not? Answers will vary depending on the type of storm chosen and the location. 2. What do hurricanes, tropical storms, and tornadoes all have in common? They are all cyclones. A cyclone is any storm with a circular pattern of winds formed by a low-pressure center. © Macmillan/McGraw-Hill 3. Why would you want to stay away from windows during a tornado? During a tornado, the difference in air pressure between the air outside the building and the air inside the building is very great. It is common for windows to be broken and glass to be pushed inward during a tornado. Chapter 7 • Weather Patterns Assessment Use with Chapter 7 99 Chapter Test A Name Date The Universe Write the word that best completes each sentence in the spaces below. Words may be used only once. asteroids gravity revolution comet inertia satellite constellations planet star telescope 1. The force of attraction between two objects is called gravity 2. A(n) . telescope is an instrument that is used to see things that are far away. 3. A large object that orbits a star but does not give off its planet own light is a(n) . 4. An object in space that produces its own heat and light is a(n) star . 5. The tendency of a moving object to keep moving in a straight line is inertia . 6. One complete trip around the Sun is a(n) revolution . 7. An object in space that circles around another object is 8. Most satellite asteroids Jupiter. 9. A(n) . are located between Mars and © Macmillan/McGraw-Hill a(n) comet is made of a mixture of frozen gases, ice, dust, and rock. constellations 10. Patterns formed by stars are called . 100 Chapter 8 • The Universe Assessment Use with Chapter 8 Name Chapter Test A Date Circle the letter of the best answer for each question. 11. How long does it take Earth to make one revolution around the Sun? A 24 hours B 24.5 hours C 365 days D 365.25 days 12. What happens when the Moon passes directly between the Sun and Earth? A an umbra B a penumbra C a solar eclipse 14. At which stage of a star’s cycle is it small and dense? A white dwarf B nebula C supernova D red giant 15. The surfaces of the inner planets are mostly made of A gases. B rock. C metals. D ice. D a lunar eclipse 13. A natural satellite that orbits a planet is called a A comet. B moon. C crater. © Macmillan/McGraw-Hill D probe. Chapter 8 • The Universe Assessment Use with Chapter 8 101 Chapter Test A Name Date Answer the following questions. 16. Interpret Data Scientists are studying a distant group of stars. The grouping is flat with a bulge in the middle and it is shaped like a pinwheel with two arms. What are the scientists most likely studying? They are studying a barred spiral galaxy. 17. Communicate What causes Earth to revolve around the Sun? The combination of gravity and inertia causes Earth to revolve around the Sun. Gravity pulls Earth towards the Sun. Inertia acts to keep Earth moving in a straight line away from the Sun. 18. Observe Which part of the illustration is the umbra? Students should label the part of the Sun that is blocked as the umbra, and the part of the Sun that is not blocked as the penumbra. The umbra is the area of the Sun where light is completely blocked off during a solar eclipse. The penumbra is the area of the Sun that can still be seen during a solar eclipse. 102 Chapter 8 • The Universe Assessment Use with Chapter 8 © Macmillan/McGraw-Hill Which part is the penumbra? Label each and explain what they are. Name Chapter Test A Date Answer the following questions. 19. Read the following description, and then identify the object being described. A rock revolves around the Sun. It is located in a belt between Mars and Jupiter. It has an irregular shape that is kind of like a potato. An asteroid 20. Why do scientists believe that the big bang theory is true? Scientists have found evidence that the universe is expanding in all directions in ripples. Something had to occur at the center of the universe for those ripples to start. This point would be where the big bang occurred. 21. Critical Thinking Why might scientists want to study solar and lunar eclipses? Answers will vary but may include: Scientists study eclipses to learn about the rotation of Earth and the Moon around the Sun. Scientists may want to learn more about how eclipses affect Earth and the Moon. 22. Thinking Like a Scientist What would you need to do in order to study the moons of Jupiter? © Macmillan/McGraw-Hill Answers will vary, but may include: Use an optical telescope to view the moons of Jupiter. Also, use a space telescope, such as the Hubble, or a radio telescope to gather more data. Chapter 8 • The Universe Assessment Use with Chapter 8 103 Lesson 1 Test Name Date Circle the letter of the best answer for each question. 1. A force of attraction that exists between any two objects is 3. Look at this diagram of Earth and the Sun. What season is it in the Northern Hemisphere? A gravity. B inertia. C revolution. D rotation. 2. The strength of the pull of gravity depends on A speed and distance. B mass and distance. C mass and speed. D speed and inertia. A winter B spring C summer D fall 4. The force that makes objects keep traveling in a straight line is A gravity. B inertia. C attraction. Critical Thinking What would be the effect on Earth if the planet’s axis were not tilted? If Earth’s axis were not tilted there would be an equal number of hours of day and night throughout the year. There would also be no seasons, although it would still be warmer in the tropics than at the poles. 104 Chapter 8 • The Universe Assessment Use with Lesson 1 Earth and Sun © Macmillan/McGraw-Hill D energy. Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. Which phase of the Moon is shown here? 3. When do neap tides occur? A during full moons B during new moons C during first and last quarter moons D when the Sun is rising or setting 4. What happens during a lunar A first quarter eclipse? B waxing gibbous A The Moon is hidden by C full moon D last quarter 2. An eclipse occurs whenever A the Moon rises. B the Sun sets. C one object in space hides the Sun’s shadow. B The Moon is hidden by Earth’s shadow. C The Sun is hidden by the Moon’s shadow. D The Sun is hidden by Earth’s shadow. another object in space. D the Moon rises while the Sun is still out. © Macmillan/McGraw-Hill Critical Thinking What would most likely happen if a strong coastal storm hit during a time of spring tides? The storm would do even more damage than expected because at high tide, the water would be particularly high. Chapter 8 • The Universe Assessment Use with Lesson 2 Earth and Moon 105 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. Which planet in the solar system has the most moons? A Jupiter B Saturn C Neptune 4. The diagram shows the solar system. D Uranus 2. Jupiter’s Great Red Spot is a A moon. Which planet is Neptune? B storm. A A C satellite. B B D probe. C C 3. Which planet has the hottest D D surface temperature? A Mercury B Venus C Mars D Saturn Critical Thinking Based on what you know about the planets, which one would be impossible for humans to land on? Answers will vary. Students will probably say Venus because of the heat © Macmillan/McGraw-Hill and intense pressure, or one of the gas giants, because the surface is not solid. 106 Chapter 8 • The Universe Assessment Use with Lesson 3 The Solar System Name Lesson 4 Test Date Circle the letter of the best answer for each question. 1. A huge cloud of gas and dust in which stars form is a A supernova. B galaxy. 4. The table shows the surface temperature and color of stars. Color C nebula. D black hole. 2. What is a star called in its earliest stage? A neutron star B white dwarf C red giant D protostar 3. A pattern of stars in the night sky is called a A solar system. B constellation. Blue-white White Yellow Red-orange Red Surface Temperature (° C.) 35,000 10,000 6,000 5,000 3,000 What is the approximate surface temperature of the Sun? A 3,000° B 5,000° C 6,000° D 10,000° C cluster. D galaxy. © Macmillan/McGraw-Hill Critical Thinking What do you think is the most important recent discovery about the universe? Why is it important? Students may mention the decision to not include Pluto as a planet in our solar system. Students should justify their opinions by explaining why the discovery is important. Chapter 8 • The Universe Assessment Use with Lesson 4 Stars and the Universe 107 Chapter Test B Name Date The Universe Write the word or words that best complete each sentence in the spaces below. Words may be used only once. black hole light-year phase galaxy meteors satellite gravity nebula supernova 1. Most meteors surface. tides burn up before they reach Earth’s supernova 2. An exploding star is called a(n) 3. The Moon is a natural satellite . of Earth. 4. All objects have mass and are pulled towards one another by gravity . 5. The shape and appearance of the Moon at a particular phase time is called a . 6. The pull of the Moon’s gravity on Earth causes tides in large bodies of water. 7. An object in space that has a gravitational pull so strong black hole that light cannot escape it is called a(n) 8. All stars form out of a(n) 10. A(n) 108 galaxy light-year Chapter 8 • The Universe Assessment . holds billions of stars. © Macmillan/McGraw-Hill 9. Each nebula . is approximately 5.9 billion miles. Use with Chapter 8 Name Chapter Test B Date Circle the letter of the best answer for each question. 11. What happens when the Moon 14. is hidden by Earth’s shadow? A penumbra B umbra C solar eclipse D lunar eclipse 12. Which forms a new nebula? A supernova B black hole C neutron star D globular cluster 13. How long does it take for Earth to make one rotation on its axis? A 24 hours Which type of galaxy is shown here? A ovoid elliptical B irregular C disc-shaped elliptical D spiral 15. Saturn’s rings are composed B 24.5 hours of? C 365 days A sulfur and phosphorus. D 365.25 days B water and nitrogen. C ice and rock. © Macmillan/McGraw-Hill D gas and dust. Chapter 8 • The Universe Assessment Use with Chapter 8 109 Chapter Test B Name Date Answer the following questions. 16. Observe Draw a picture of what you might see from Earth as the Moon goes through the first quarter to last quarter phases. Students should draw in order: first quarter, waxing gibbous, full, waning gibbous, and last quarter phases of the Moon. 17. Interpret Data Read the description of the star. What stage is this star in? How do you know? Collisions between hydrogen atoms have occurred. These collisions produce heat, causing the temperature to rise. The hydrogen atoms form a dense cloud that begins to spin and give off heat and light. This star is a protostar. A protostar is a new star. In a protostar, the collision of atoms has just started to produce heat and light and to spin. 18. Communicate How does Earth’s revolution cause As Earth revolves around the Sun during the year, sunlight strikes Earth at different angles. The change in angle on different parts of Earth cause the seasons. This change in angle results from Earth being tilted on an axis, which creates the Northern and Southern hemispheres. Both hemispheres have different seasons as Earth revolves around the Sun. 110 Chapter 8 • The Universe Assessment Use with Chapter 8 © Macmillan/McGraw-Hill seasons? Name Chapter Test B Date Answer the following questions. 19. Explain how scientists explore the Moon and planets in the solar system. Scientists explore the solar system with space probes. These probes orbit and land on distant planets, such as Mars. They tell us about the Earth’s solar system. Astronauts explore the Moon, using special tools to observe and study its surface. Scientists may also use robotic rovers to explore distant planets. 20. Explain why Jupiter’s Great Red Spot is such a unique phenomenon. Jupiter’s Great Red Spot is a huge storm that has lasted for over 400 years. Its winds can reach speeds of 270 miles per hour, and it is almost twice the diameter of Earth. 21. Critical Thinking What would it mean if Earth stopped having tides? What could be the cause of such an event? Answers will vary but may include: If there were no tides, there would not be a pull of gravity from the Moon or the Sun on Earth. Gravity causes a bulge in Earth that can be seen in the tides of oceans and other large bodies of water. No pull of gravity from the Moon could © Macmillan/McGraw-Hill cause the Moon’s orbit to become noncircular. 22. Thinking Like a Scientist If you were a scientist lost in a forest, how could you use the night sky to guide yourself? Answers will vary but may include: Constellations are patterns of stars that can help point you in the correct direction. The Big Dipper or Little Dipper constellations can help you find the North Star, called Polaris. You would then know which way is north. Chapter 8 • The Universe Assessment Use with Chapter 8 111 Performance Assessment Name The Planets Date Materials Objective: Students will choose one planet (besides Earth) and create a poster to share information that scientists have gathered about that planet. • pen or pencil Scoring Rubric • crayons, markers, or colored pencils • paper • poster board points Student’s poster includes an accurate drawing of the planet chosen. The poster also includes all moons that orbit the planet. The poster includes a written description of the planet with accurate information about the planet’s composition, distance from the Sun, and temperature. The student answers Analyze the Results questions accurately. points Student’s poster includes a mostly accurate drawing of the planet chosen, and most of the moons that orbit the planet. It includes a written description of the planet with mostly accurate information about the planet’s composition, distance from the Sun, and temperature. The student answers the Analyze the Results questions with few errors. point Student’s poster includes an inaccurate drawing of the planet chosen. The poster does not include any moons that orbit the planet. The description of the planet is inaccurate or missing information about the planet’s composition, distance from the Sun, and temperature. The student does not answer the Analyze the Results questions accurately. 112 Chapter 8 • The Universe Assessment Use with Chapter 8 © Macmillan/McGraw-Hill points Student’s poster includes an inaccurate drawing of the planet chosen. The poster includes only one or two moons that orbit the planet. The poster includes a written description of the planet with inaccurate information about the planet’s composition, distance from the Sun, and temperature. The student’s answers to the Analyze the Results questions contain many errors. Name Performance Assessment Date The Planets Why are there no other planets in our solar system that support life? What do scientists know about the planets in our solar system? Choose a planet to study. Do some research about that planet. Make a poster that includes a picture of the planet and its moons. Write a description of the planet that tells about its composition, distance from the Sun, and temperature, as well as any other information you think is important or interesting. Analyze the Results 1. Why is there no life on the planet you chose to study? Answers will depend on the planet the student chose to study. Some planets do not support life because they are too cold. Others are too hot. Some do not have an atmosphere that supports life. 2. How is the composition of the planet you chose different from that of Earth? Answers will depend on the planet the student selected. Some © Macmillan/McGraw-Hill planets have surfaces made of gases. Chapter 8 • The Universe Assessment Use with Chapter 8 113 Chapter Test A Name Date Comparing Kinds of Matter Write the word that best completes each sentence in the spaces below. Words may be used only once. atom element metals density malleability molecule ductility matter nucleus volume volume 1. The measure of how much space an object takes up is matter 2. Anything that has mass and volume is made up of . . 3. The amount of mass for each milliliter of a substance is known as the density of the substance. 4. A material that cannot be broken down into anything element simpler by using chemical reactions is a(n) metals 5. A group of elements known as on the periodic table have conductivity, luster, and flexibility as common properties. . 6. The smallest unit of an element that retains the atom properties of that element is a(n) 7. The hard core of an atom is the nucleus 8. Bending a material without breaking is . malleability . molecule © Macmillan/McGraw-Hill 9. A(n) . consists of two or more atoms joined together as a single particle. 10. The ability to make a material thin without breaking it is 114 ductility . Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 Name Chapter Test A Date Circle the letter of the best answer for each question. 11. Which unit is used to measure weight? 14. The most common elements in the universe are A inch A sodium and oxygen. B pound B aluminum and nitrogen. C milliliter C carbon and calcium. D centimeter D hydrogen and helium. 12. At room temperature most elements are A solid. B liquid. C gas. D conductive. 13. Which type of particle inside 15. What happens to metals when they combine with nonmetals from the environment? A they become corroded B they melt C they turn to a gas D they explode an atom has one unit of negative electrical charge? A proton B neutron C electron © Macmillan/McGraw-Hill D nucleus Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 115 Chapter Test A Name Date Answer the following questions. 16. Use Numbers Compare the two bowls of marbles below. Which bowl of marbles has the greatest density? How do you know? What formula is used to find density? Bowl A has the greatest density. Both bowls are the same size, so they have the same volume. Bowl A has more marbles inside, so it has a greater density than bowl B. To find the density, use the formula Density = Mass Volume. 17. Communicate Describe a proton, neutron, and electron. Where are these particles located inside an atom? Protons and neutrons are inside the nucleus of an atom. A proton has one unit of positive electrical charge. The number of protons in an atom determines which element it is. A neutron has no electrical charge. Electrons move around inside an atom, outside of the nucleus. An electron has a negative electrical charge. ways. Give two examples of how people use aluminum. Explain why aluminum is a good metal for each example. Student responses will vary. Aluminum is used in mirrors because it can be polished to be reflective. Aluminum is used to wrap around food because it will reflect the heat inside. Aluminum is used in electrical wiring because it conducts electricity and is inexpensive. Aluminum is used for cans because it is easy to mold and is inexpensive. 116 Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 © Macmillan/McGraw-Hill 18. Infer Aluminum is a metal that is used in many different Name Chapter Test A Date Answer the following questions. 19. Look at the periodic table below. Circle one nonmetal. 1 Group Key 11 1 1 Hydrogen Period 2 3 4 5 6 7 Na H 3 2 4 Li Be Lithium Beryllium 11 Mg Magnesium 20 18 Atomic number Element’s symbol 2 Element’s name 13 5 Metals Nonmetals Metalloids (semimetals) 12 Na Sodium 19 Sodium 3 21 4 22 5 23 6 24 25 9 8 26 27 10 28 11 29 12 6 15 7 16 17 8 Helium 9 10 B C N O F Ne Boron Carbon Nitrogen Oxygen Flourine Neon 13 7 14 He Si 14 15 P S Cl Ar Silicon Phosphorus Sulfur Chlorine Argon 30 31 32 33 16 18 Al Aluminum 17 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Germanium Arsenic Selenium Bromine Krypton Rb Sr 38 39 Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te 52 53 I Xe Rubidium Strontium Yitrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Pallidium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon 37 55 56 57 40 72 41 73 42 74 43 75 44 76 45 77 46 78 47 79 48 49 80 81 50 82 51 83 84 54 85 86 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Cesium Barium Lanthanum Lanthanum Hafnium Tantalum Tungsten Rhenium Tungsten Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon 87 88 89 104 105 106 107 108 109 Fr Ra Ac Rf Db Sg Bh Hs Mt Francium Radium Actinium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meinerium 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium 20. Explain what buoyancy is and give an example of an object that is buoyant. Explain why that object is buoyant. Buoyancy is a resistance to sinking. Students may respond that a boat is buoyant. A boat will not sink in water because the water has a greater density than the boat. 21. Critical Thinking What are the three important properties of chemical elements? The three important properties of common elements are their state of matter at room temperature, how they combine with other © Macmillan/McGraw-Hill elements, and whether they are metals, nonmetals, or metalloids. 22. Thinking Like a Scientist What would you do to measure the volume of a baseball? Answers will vary, but may include the following: I would fill a clear graduated cylinder with water. I would record how many milliliters of water are in the cylinder, and then carefully place the ball inside. I would look to see how many milliliters the water line rose. That gives me the volume of the baseball in cubic centimeters. Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 117 Lesson 1 Test Name Date Circle the letter of the best answer for each question. 1. What is the volume of the 3. How is a gas different from a block? solid or a liquid? A It is made of tiny particles. mL 200 mL mL 200 mL 200 200 150 150 100 100 50 50 A 40 mL B 60 mL C 100 mL D 140 mL B It has volume. C It expands to fill its container. D It has density. 4. Which property causes water to form droplets? A mass B density C buoyancy D surface tension 2. Which material is the most dense? A air B water C plastic D iron object’s location. Mass remains constant no matter where an object is. Therefore, mass is a property of the object itself. 118 Chapter 9 • Comparing Kinds of Matter Assessment Use with Lesson 1 Properties of Matter © Macmillan/McGraw-Hill Critical Thinking Why do scientists measure and record the mass of objects rather than their weight? Weight depends on the pull of gravity, so it varies depending on an Name Lesson 2 Test Date Circle the letter of the best answer for each question. 1. An element that is likely to combine with other elements to form new substances is said to be 3. A student made this model of a carbon dioxide molecule. It has one carbon atom and two oxygen atoms. A buoyant. B chemically reactive. C metallic. D solid at room temperature. 2. The nucleus of an atom is made of A electrons and empty space. B protons and neutrons. C protons and electrons. D neutrons and electrons. What is the correct way to write the chemical name of carbon dioxide? A C2O B C2O C CO2 D CO2 4. Niels Bohr’s model of an atom looked like a(n) A solar system. B galaxy. C cloud. © Macmillan/McGraw-Hill D electric charge. Critical Thinking The model that scientists use to represent what an atom looks like has changed over time. Why? The model has changed as scientists’ understanding has changed. The student should state that the original model was based on the best information available at the time. As scientists develop better tools (such as the electron microscope), they developed better models. Chapter 9 • Comparing Kinds of Matter Assessment Use with Lesson 2 Elements 119 Lesson 3 Test Name Date Circle the letter of the best answer for each question. 1. Malleability is the ability to 3. Which of the following is a metalloid? A conduct electricity. A oxygen B reflect heat. C be shaped without B silicon D be pulled into thin wires. D argon breaking. C chlorine 2. Here is a portion of the 4. Which of the following is a periodic table of elements. 24 25 26 27 28 29 noble gas? 30 Cr Mn Fe Co Ni Cu Zn Chromium Manganese Iron Cobalt Nickel Copper Zinc 42 43 44 45 46 47 48 Mo Tc Ru Rh Pd Ag Cd Molybdenum Technetium Ruthenium Rhodium Pallidium Silver Cadmium Which element shown here is least metallic? A carbon dioxide B boron C oxygen D helium A zinc B iron C cadmium D silver Critical Thinking What is the purpose of the periodic table of elements? How is it useful to scientists? The periodic table classifies elements and arranges them according to their properties, so that similar elements are grouped together. It is useful because it allows someone to determine what an element is like based on 120 Chapter 9 • Comparing Kinds of Matter Assessment © Macmillan/McGraw-Hill the properties of similar elements. Use with Lesson 3 Metals, Nonmetals, and Metalloids Name Chapter Test B Date Comparing Kinds of Matter Write the word that best completes each sentence in the spaces below. Words may be used only once. atom element metals density malleability molecule ductility matter nucleus volume 1. Elements found on the periodic table that have a shiny metals luster, can be shaped, and conduct electricity are . 2. Anything that has both mass and volume is known as 3. A(n) matter . element is a material that cannot be broken down into anything simpler by using chemical reactions. 4. Two or more atoms joined together as a single particle form a(n) molecule . 5. Materials that can be pulled into thin wires easily without ductility breaking have good 6. The of an atom is the hard core. density of a substance is the amount of mass for each milliliter of that substance. © Macmillan/McGraw-Hill 7. The nucleus . 8. The measure of how much space matter takes up is called 9. A(n) volume . atom is the smallest unit of an element that retains the properties of the element. 10. The ability to be flattened or bent without breaking describes the malleability Chapter 9 • Comparing Kinds of Matter Assessment of metals. Use with Chapter 9 121 Chapter Test B Name Date Circle the letter of the best answer for each question. 11. At room temperature the element nickel is A liquid. B metalloid. C gas. D solid. 12. Inside an atom, which type of particle has one unit of negative electrical charge? A electron B proton C neutron D nucleus 13. What are the most common 14. A substance is malleable, conducts electricity, and is a solid at room temperature. This substance is most likely A sodium. B chlorine. C sulfur. D copper. 15. Which unit is used to measure volume? A kilogram B milliliter C centimeter D pound elements in Earth’s atmosphere? A nitrogen and oxygen B hydrogen and helium C silicon and sodium © Macmillan/McGraw-Hill D carbon and aluminum 122 Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 Name Chapter Test B Date Answer the following questions. 16. Communicate Mercury is a liquid at room temperature, but it is classified as a metal. Explain why mercury is a metal. Mercury is classified as a metal because of its physical and chemical properties. Even though mercury is a liquid at room temperature it still exhibits metallic traits such as being strong and very dense. 17. Infer People use gold for many different things. Give two examples of how people use gold. Explain what characteristics of gold make it good for these uses. Answers will vary but may include the following: Gold can be used to make jewelry and coatings for a variety of objects. People use gold for these things because it can be bent, flattened, or hammered easily without breaking. It can be used in thin layers. 18. Use Numbers To determine density, divide mass by © Macmillan/McGraw-Hill volume. Bowl A is 100 grams (g) and its volume is 10 cubic centimeters (cm3). Bowl B is 50 g and its volume is also 10 cm3. Which bowl has the lowest density? Bowl B has the lowest density. Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 123 Chapter Test B Name Date Answer the following questions. 19. Look at the objects below. Circle the one that you think is buoyant. Explain why you think that object is buoyant and why the other objects are not. The beach ball is buoyant. It will not sink in water because the air inside the beach ball is less dense than the water. The hammer and rock are not buoyant because they have a greater density than the water. 20. List three characteristics of metalloids. Students may respond that metalloids have properties in between metals and nonmetals. They are solids that look like metals but are not as shiny. They are not as easy to bend as metals. They conduct electricity better than nonmetals, but not as well as metals. They are called semiconductors. 21. Critical Thinking Complete the list of properties of elements and the possibilities available for each property. Possibilities State of matter at room temperature Solid, liquid, or gas How they combine with other elements Reactive, nonreactive Type of element Metals, nonmetals, metalloids 22. Thinking Like a Scientist What properties would you test to see if a substance is a nonmetal? If a substance were dull, a poor conductor, and brittle, it would most likely be a nonmetal. 124 Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 © Macmillan/McGraw-Hill Properties of Elements Name Date Element Information Objective: Students will conduct research on a chemical element and create an information card about that element. They will use their information card to give an oral presentation to the class. Scoring Rubric Performance Assessment Materials • construction paper • crayons or colored pencils • pencil points Student creates an information card • periodic table about one element. Student includes all information about the element from the periodic table on one side of the card and detailed information about the element and how it is used on the other side of the card. Student communicates information about the element clearly and accurately through an oral presentation. points Student creates an information card about one element. Student includes most information about that element from the periodic table on one side of the card and information about the element and how it is used on the other side of the card, but some details are missing. Student communicates most ideas about the element clearly and accurately through an oral presentation. © Macmillan/McGraw-Hill points Student creates an information card about one element. Student includes some information about that element from the periodic table on one side of the card and a small amount of information about the element on the other side of the card, but important details are missing. Student communicates some ideas about the element clearly and accurately through an oral presentation. point Student attempts to create an information card. Student includes little or no accurate information about an element from the periodic table on one side of the card and little or no accurate information about the element on the other side of the card. Student does not communicate any information about the element accurately or clearly through an oral presentation. Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 125 Performance Assessment Name Date Element Information Communicate Choose an element from the periodic table for which to make a detailed information card. On one side of the card, make a square from the periodic table for the element you choose. Include the name of the element, the symbol, the atomic number, and the atomic mass in the correct locations. On the other side of the card, include additional information about the element. This should include the number of protons, neutrons, and electrons in the element. You should also tell what kind of element it is (metal, nonmetal, metalloid) and include common uses for the element and its level of reactivity. Analyze the Results 1. What is the atomic mass of your element? What does the atomic mass represent? Answers will vary depending upon the element the student chooses. The atomic mass represents the total mass of the protons, neutrons, and electrons added together. 2. What is a molecule? How is a molecule formed? How do scientists show which elements are included in a molecule? A molecule is two or more atoms joined together as a single particle. show which elements are included in a molecule, scientists use the symbols from the periodic table to show the kinds of elements in the molecule. They use numbers called subscripts to show how much of each element is in the molecule. 126 Chapter 9 • Comparing Kinds of Matter Assessment Use with Chapter 9 © Macmillan/McGraw-Hill Molecules form when atoms join together through their electrons. To Name Chapter Test A Date Physical and Chemical Changes Write the word or words that best complete each sentence in the spaces below. Words may be used only once. acid colloid neutralization base compound physical change chemical change mixture solution sublimation 1. A(n) physical change alters the form of an object but not its substance. 2. The change of state directly from a solid to a gas is sublimation . 3. A physical combination of substances that remain the same is a(n) mixture . 4. A mixture of sugar dissolved in water is an example of a(n) 5. A(n) solution . compound two or more elements. 6. A(n) is formed by the combination of chemical change occurs when atoms break their old links and form new links with other atoms. © Macmillan/McGraw-Hill 7. A mixture with parts that are just small enough not to form layers is a(n) acid 8. A(n) water. 9. In a process called colloid . tastes sour and can dissolve in neutralization , acids and bases react to form salt and water. base 10. A(n) turns red litmus paper blue. Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 127 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. What is the boiling point of water? 14. Which will produce a chemical reaction? A 0°C A salt into pepper B 50°C B baking soda into vinegar C 70°C C paper into a shredder D 100°C D rock into water 12. Which part of a solution is dissolved? 15. A substance that forms ions when dissolved is a(n) A solvent A acid. B mixture B base. C solute C electrolyte. D compound D alkaline. 13. Which chemical formula shows two atoms of iron and three atoms of oxygen? A FeO3 B Fe2O C Fe2O3 © Macmillan/McGraw-Hill D Fe3O2 128 Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 Name Chapter Test A Date Answer the following questions. 16. Classify What are some common uses for acids? What are some common uses for bases? Answers will vary but may include: Some common uses for acids are making plastics, cleaning steel, and digesting food. Some common uses for bases are cleaning drains, making fertilizers, and making detergents. 17. Infer Explain the effects of thermal expansion and thermal contraction on a hot air balloon. Thermal expansion involves an increase in heat. When the heat going into the balloon increases, the balloon expands and rises. Thermal contraction involves losing heat. When the heat going into the balloon decreases, the balloon contracts and sinks. 18. Communicate Label the parts of this chemical equation: © Macmillan/McGraw-Hill H + O2 hydrogen plus oxygen reactants H2O water product Explain what each part of the chemical equation is. The reactants are the chemicals that are combined. When the two chemicals are combined, they form the product. Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 129 Chapter Test A Name Date Answer the following questions. 19. How do plants use chemical reactions? Plants use chemical reactions to create food. Through photosynthesis plants use chemicals from the Sun to react with chemicals in leaves. This chemical reaction results in the creation of simple sugars. 20. Give an example of how people use colloids every day. Answers will vary but may include: People use colloids like mayonnaise and foam every day. 21. Critical Thinking A student fills a paper cup with water and puts it in a freezer overnight. When she takes the cup out the next day, she notices that the sides of the cup are pushed out. Why did this happen? Just before water freezes, the molecules in the water move farther apart and line up in a solid arrangement or pattern. Ice expands in this solid arrangement and pushes the sides of the cup out. 22. Thinking Like a Scientist A scientist wants to test the acidity of a solution. What can she do? use litmus paper to test the acidity. If the solution is acidic, it will turn blue litmus paper red. It will have no effect on red litmus paper. 130 Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 © Macmillan/McGraw-Hill While being very careful not to touch the solution, the scientist can Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Which of the following is 3. The change in an object’s A chopping an onion A thermal expansion. B frying an egg B thermal contraction. C melting snow C boiling. D boiling water D evaporation. not an example of a physical change? 2. Use the table to answer question 2. Changes of State for Some Common Materials Name volume that occurs when heat is added is called 4. What is the change of state from solid to gas called? A transpiration Melting Point Boiling Point B evaporation 1,083°C 2,567°C –210°C –196°C C sublimation 0°C 100°C 801°C 1,465°C 1,538°C 2,861°C copper nitrogen water table salt iron D thermal contraction Which material is a liquid at room temperature (25°C)? A copper B nitrogen C water © Macmillan/McGraw-Hill D table salt Critical Thinking Why is it important to make sure that water pipes do not freeze on cold nights? Water expands as it freezes. Therefore, if water pipes freeze, the water or ice inside expands and the pipes can burst. Chapter 10 • Physical and Chemical Changes Assessment Use with Lesson 1 Changes of State 131 Lesson 2 Test Name 1. Which of the following is an example of a colloid? Date 4. Use the table to answer question 4. A muddy water B mayonnaise C orange juice Solubility of Sugar in Water Temperature in degrees Celsius Grams of sugar per 100 grams of water 20 204 30 219 D cake mix 2. The purpose of distillation is to A purify water. 40 B separate a mixture. 50 C create an alloy. D increase solubility. 3. Steel is an example of a(n) A alloy. B solution. 260 How many grams of sugar can dissolve in 100 grams of water heated to 40°C? A 200 g C 240 g B 210 g D 260 g C colloid. D suspension. Critical Thinking What is the best way to separate a mixture of iron filings, sand, and pebbles? First use a magnet to remove the iron filings. Then use filters of different © Macmillan/McGraw-Hill sizes to separate the pebbles, then the sand. 132 Chapter 10 • Physical and Chemical Changes Assessment Use with Lesson 2 Mixtures Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. This formula shows the chemical reaction that occurs when the body breaks down sugar. The products are carbon dioxide and water. C6H12O6 an example of a chemical change? A bubbles in soda B a tarnished spoon 6CO2 6H2O How many carbon atoms are needed in this reaction? A 1 C 6 B 2 3. Which of the following is not C forming a precipitate D respiration 4. How is a compound different D 12 A It is made of one substance. 2. The chemical formula for baking soda is NaHCO3. How many sodium (Na) atoms are there in one molecule of baking soda? A 1 C 3 B 2 D 4 from a mixture? B It cannot be made of organic materials. C It cannot be broken down. D It cannot be separated by a physical change. Critical Thinking The formula for photosynthesis is: © Macmillan/McGraw-Hill CO2 H2O light and chlorophyll in the presence of O2 C6H12O6 Explain the chemical reaction that takes place during photosynthesis. Carbon dioxide and water combine to form oxygen and sugar; energy and chlorophyll are also needed so that the two sides of the equation are in balance. Chapter 10 • Physical and Chemical Changes Assessment Use with Lesson 3 Compounds and Chemical Changes 133 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. An ion is an atom or molecule 3. Why do most salts have high A can combine with other A They do not dissolve in B has an electric charge. B They do not form solutions. C has no change. C They are ionic compounds. D contains hydrogen. D They are formed from acids that atoms. 2. What does the chemical formula for an acid often begin with? melting points? water. and bases. 4. A substance that dissolves to form ions is a(n) A + A acid. B O+ B base. C H C electrolyte. D H- D hydroxide particle. Critical Thinking Hydrangeas are flowers that produce blue flowers when grown in acidic soil and pink flowers when grown in alkaline soil. Predict the color of hydrangea flowers in neutral soil. Explain your answer. Answers will vary but may include: The flowers could be purple or a color between pink and blue. The flowers could also be an entirely different © Macmillan/McGraw-Hill color. The reason is that the soil is neither acid nor alkaline. 134 Chapter 10 • Physical and Chemical Changes Assessment Use with Lesson 4 Acids, Bases, and Salts Name Chapter Test B Date Physical and Chemical Changes Write the word or words that best complete the sentence in the spaces below. Words may be used only once. acid colloid physical change alloy compound products base neutralization reactants alloy 1. A(n) sublimation is a solution of a metal and another solid. 2. When dry ice changes from a solid to a gas, it is an sublimation example of compound 3. A(n) elements. . has properties different from its 4. When a chemical reaction is reversed, products break apart or combine to form their original reactants. 5. A(n) physical change involves changing the form of an object without changing its make up. 6. A mixture containing parts that do not settle is a(n) colloid . acid 7. A(n) turns blue litmus paper red. © Macmillan/McGraw-Hill 8. When an acid and a base combine to form a neutral pH solution, neutralization has occurred. 9. A substance that tastes bitter and feels soapy is a(n) base . 10. The chemicals on the left side of a chemical equation are called reactants . Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 135 Chapter Test B Name Date Circle the letter of the best answer for each question. 11. What is the substance in a solution capable of dissolving another substance called? 14. Any compound made of positive and negative ions that form crystals are A solute A metals. B compound B salts. C mixture C sugars. D solvent D lipids. 12. Which chemical formula shows one atom of carbon and two atoms of oxygen? 15. What are atoms or molecules that have gained or lost one or more electrons called? A C2O2 A acids B C2O B ions C CO2 C bases D CO3 D electrolytes 13. What is the melting point of water? A 0°C B 50°C C 70°C © Macmillan/McGraw-Hill D 100°C 136 Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 Name Chapter Test B Date Answer the following questions. 16. Infer Explain the process of separating a mixture consisting of iron filings and sand in a plastic bowl. In this mixture, using magnetism would be the best way to separate the two parts. A magnet would attract the iron and therefore separate it from the nonmagnetic sand. 17. Classify Look at the list below. Write each item under the correct heading in the chart. fertilizers in lemons used to clean steel food digestion soap used to make textiles Acids Bases food digestion, fertilizers, in lemons, soaps, used to clean steel used to make textiles 18. Communicate Describe the law of conservation of mass in relation to a chemical equation. Can the total mass on the left side of the equation be greater than the right side? No, the total mass of the left side cannot be greater than the right © Macmillan/McGraw-Hill side. The law of conservation of mass states that the total mass of the reactants (left side) must equal the total mass of the products (right side). The total number of each type of atom must be the same in both the reactants and the products. Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 137 Chapter Test B Name Date Answer the following questions. 19. What is evaporation, and when does it occur? Evaporation is the change from a liquid to a gas at temperatures below the boiling point. Evaporation occurs when molecules with more energy than other molecules escape to the surface of the liquid. These molecules become a gas. 20. How do machines use chemical reactions? Machines use chemical reactions to create different types of things. Inside machine engines, chemicals combine to create a reaction that will provide energy. 21. Critical Thinking A garden has pink and blue hydrangeas growing in it, but it also has purple and white hydrangeas. What might this say about the soil in the garden? Answers will vary but may include: Acidic soil produces blue flowers; basic soil produces pink flowers; purple and white flowers might be produced by neutral soil. 22. Thinking Like a Scientist A scientist had a minor accident in her lab—some acid has spilled on her desk. Because she is an experienced scientist, what might she attempt to do? neutralize the acid with a base, which would produce salt and water. 138 Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 © Macmillan/McGraw-Hill Answers will vary but may include: The scientist might want to Name Date Chemical Compound Models Performance Assessment Materials Objective: Students will research a chemical compound, make a ball-and-stick model of the compound, and write a description of it. • modeling clay Scoring Rubric • index cards • toothpicks • pencils points Student does research on a chemical compound. Based on that research, student uses modeling clay and toothpicks to create an accurate ball-and-stick model of the compound. Student writes a description of the compound that is accurate, clear, and easy to understand. Student answers the questions in Analyze the Results correctly. points Student does research on a chemical compound. Based on that research, student uses modeling clay and toothpicks to create a mostly accurate ball-and-stick model of the compound. Student writes a description that is mostly accurate, clear, and easy to understand. Student answers the questions in Analyze the Results with few errors. © Macmillan/McGraw-Hill points Student does some research on a chemical compound. Student uses modeling clay and toothpicks to create a ball-and-stick model of the compound that is only partially accurate. Student writes a description that is partially inaccurate, unclear, or difficult to understand. Student answers the questions in Analyze the Results with many errors. point Student does little research on a chemical compound. Student does not accurately show any part of the compound in a ball-and-stick model. Student does not write a description of the compound. Student does not answer the questions in Analyze the Results. Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 139 Performance Assessment Name Date Chemical Compound Models Make a Model Choose a chemical compound to learn more about. Do some research about the chemical compound using reference books. Using clay and toothpicks, make a ball-and-stick model that accurately shows the chemical compound. Then write a description of the compound on an index card. Display the model and the index card together. Then look at some of the chemical compounds other students researched. Analyze the Results 1. In the chemical compound for water, H2O, what does the 2 tell you? It tells you how many atoms of an element are part of the compound. In this case, there are two atoms of hydrogen. 2. What did you learn about another student’s chemical compound? Student responses will vary depending on the chemical compounds © Macmillan/McGraw-Hill that were researched. 140 Chapter 10 • Physical and Chemical Changes Assessment Use with Chapter 10 Name Chapter Test A Date Using Forces Write the word or words that best complete each sentence in the spaces below. Words may be used only once. efficiency energy force friction fulcrum law of conservation of energy momentum position velocity work position 1. The location of an object is its . momentum 2. The more an object has, the easier it is for that object to move other objects. force 3. Units of are the newton and the pound. energy 4. The ability to perform work is . 5. The measurement that combines the speed and direction of a moving object is velocity . work 6. The done on an object changes the amount of energy it has. 7. A fulcrum lever. is a pivot point for a © Macmillan/McGraw-Hill 8. The force that opposes the motion of one object moving past another is friction . 9. Electric motors have a high degree of efficiency because they output 85 percent of the energy they use. 10. The idea that energy cannot be created or destroyed is the basis for the law of conservation of energy . Chapter 11 • Using Forces Assessment Use with Chapter 11 141 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. What is the change in velocity over time? A speed B acceleration C momentum D distance 12. When two forces act on an object in opposite directions, it is called a(n) 14. What kind of machine takes one force and changes it to a different force? A simple B complex C coiled D single 15. The force applied to a machine is called A action force. A load. B reaction force. B effort. C unbalanced force. C mass. D balanced force. D input. 13. Energy that is stored is called A kinetic energy. B heat energy. C potential energy. © Macmillan/McGraw-Hill D sound energy. 142 Chapter 11 • Using Forces Assessment Use with Chapter 11 Name Chapter Test A Date Answer the following questions. 16. Interpret Data A scientist takes three trips in a golf cart to see how fast it can travel. Use the data in the chart to determine how long it will take to travel 100 miles. How many miles per hour can the golf cart travel? 1st trip 2nd trip 3rd trip Distance 40 miles 80 miles 100 miles Time 2 hours 4 hours 5 hours The golf cart can travel 20 miles per hour. 17. Communicate What is one of Newton’s three laws of motion? Answers will vary but should include: Newton’s first law is that an object at rest tends to stay at rest, and an object in constant motion tends to stay in motion, unless acted upon by an unbalanced force. Newton’s second law is that the unbalanced force on an object is equal to the mass of the object multiplied by its acceleration. Newton’s third law is that for every action there is an opposite but equal reaction. 18. Observe Look at the car shown on the grid. What distance did the car travel? In what direction did it travel? © Macmillan/McGraw-Hill The car traveled 5 miles. It traveled from west to east. Chapter 11 • Using Forces Assessment Use with Chapter 11 143 Chapter Test A Name Date Answer the following questions. 19. What is kinetic energy? Give an example of kinetic energy. Kinetic energy is the energy of a moving object. Answers for examples will vary but may include: Sound is a form of kinetic energy because the sound moves in waves. 20. What is momentum? Explain how momentum works. Momentum is the product of mass multiplied by velocity. The more momentum an object has, the easier it is for the object to move other objects. 21. Critical Thinking A student enters a building and wants to get up to the 25th floor. She has to choose between a simple machine and a compound machine to get there. What are her choices? Which one is simple and which one is compound? Which one will get her there the quickest? The simple machine is the stairs. The compound machine is the elevator. The stairs make a simple machine because they are an inclined plane. The elevator is a compound machine because it is 22. Thinking Like a Scientist The children at the local park think the slide is too slow. There is too much friction. What could you do to decrease the amount of friction on the slide? Students may respond that they would try to make the surface of the slide smoother. 144 Chapter 11 • Using Forces Assessment Use with Chapter 11 © Macmillan/McGraw-Hill made up of several simple machines. Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Why is it harder to overcome the inertia of a bowling ball than a baseball? A because the bowling ball is larger B because the bowling ball has greater mass C because the baseball has less momentum D because the baseball has greater acceleration 2. Which statement about acceleration is false? A Acceleration can be positive or negative. B Acceleration refers to an increase in speed over time. C Acceleration includes a measure of direction. D Acceleration measures the rate of change of velocity. 3. Top Speeds of Animals Animal Top Speed turtle 2 m/s bee 8 m/s cheetah 30 m/s eagle 33 m/s Which statement is correct? A Land animals are quicker than animals that fly. B Insects cannot move as quickly as land animals. C Some birds can move more quickly than some land animals. D All birds can move more quickly than land animals. 4. From a complete stop, a car reaches a velocity of 280 km/s east in 7 seconds. What is the rate of acceleration? A 4 (m/s)/s B 7 (m/s)/s C 40 (m/s)/s © Macmillan/McGraw-Hill D 70 (m/s)/s Critical Thinking Why do car ads tell how fast a car accelerates, but seldom mention velocity? A car’s top velocity is limited by the speed limit on the road and the direction in which the driver wants to go. Acceleration, however, depends on how powerful the engine is and differs according to the type of car. Chapter 11 • Using Forces Assessment Use with Lesson 1 Motion 145 Lesson 2 Test Name Date Circle the letter of the best answer for each question. 1. According to Newton’s Law of Universal Gravitation, the force of gravity depends on 3. What happens to an object that is acted upon by unbalanced forces? A acceleration and distance. A It stops moving. B distance and mass. B It changes its motion. C mass and velocity. C It gets cold. D velocity and inertia. D It gets hot. 2. On Earth, which forces tend to slow an object down? 4. What is the total force of the bicycle and rider? A friction and drag B drag and momentum C momentum and gravity D gravity and acceleration A 30 N B 70 N C 100 N Critical Thinking How would cars look different if there were no friction? Answers will vary but should include: Cars could be any shape because they would not have to overcome the effects of friction. Some students will also mention that engines could be less powerful. 146 Chapter 11 • Using Forces Assessment Use with Lesson 2 Forces and Motion © Macmillan/McGraw-Hill D 130 N Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. Which of these requires the 3. What information goes in the least amount of work? blank space in the table? A lifting one 10 N box and Types of Energy moving it 2 meters B lifting five 1 N boxes and moving them 2 meters C lifting one 10 N box and moving it 1 meter Definition Example kinetic energy of a moving object a soccer ball that has been kicked energy stored in potential the position of an object D lifting five 1 N boxes and moving them 1 meter 2. Which of the following is not a ? A a stretched spring kind of kinetic energy? B a parked car A heat energy C a deer running B electricity D a rock at the bottom of a hill C sound energy D magnetic energy Type of Energy 4. According to the law of conservation of energy, when an object gains kinetic energy, it loses A electricity. B power. C potential energy. © Macmillan/McGraw-Hill D newton-meters. Critical Thinking Explain why turbines would generate more electricity if friction could be reduced. Friction causes some of the energy a turbine produces to be turned into heat rather than electricity. If friction could be reduced, more of the energy would be useful electrical energy. Chapter 11 • Using Forces Assessment Use with Lesson 3 Work and Energy 147 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. A knife is an example of a(n) A inclined plane. 4. What kind of machine is this student using? B wedge. C lever. D pulley. 2. Which is an example of a lever? A ramp B roller skate C swing D seesaw 3. A school building has a ramp instead of steps at the front door. This is an example of a(n) A a first-class lever B a second-class lever C a wheel and axle D an inclined plane A compound machine. B wheel and axle. C inclined plane. D third-class lever. Critical Thinking Explain why it is easier to move an object up a long ramp than a short ramp, assuming the height of the ramp stays the same. moved as far on the shorter ramp but more effort is required to move the load. Less effort is required to move the load up the longer ramp. 148 Chapter 11 • Using Forces Assessment Use with Lesson 4 Simple Machines © Macmillan/McGraw-Hill A ramp is an example of an inclined plane. A load does not have to be Name Chapter Test B Date Using Forces Write the word or words that best complete each sentence in the spaces below. Words may be used only once. efficiency energy force friction fulcrum law of conservation of energy momentum position simple machine work 1. A rollercoaster losing potential energy and gaining kinetic energy is an example of the law of conservation of energy . friction 2. A smooth surface usually has less than a rough surface. simple machine 3. A(n) takes one force and changes its direction, distance, or strength. 4. Mass Velocity Momentum . 5. The amount of energy used to perform a task is work . 6. The ratio of input energy to output work is efficiency . position 7. An object’s © Macmillan/McGraw-Hill described as points on axes in a grid. can be 8. Pushes, pulls, and lifts are all types of force . 9. Performing work or changing an object requires energy . 10. A lever rotates around a pivot point called a(n) fulcrum Chapter 11 • Using Forces Assessment . Use with Chapter 11 149 Chapter Test B Name Date Circle the letter of the best answer for each question. 11. What type of machine is formed when two or more machines are combined? A compound B complex C single D simple 12. An object that moved as a result of a machine working is called the 14. Two forces acting on an object in a way that changes the object’s motion create a(n) A balanced force. B unbalanced force. C action force. D reaction force. 15. Energy of a moving object is called A effort. A stored energy. B load. B potential energy. C output. C kinetic energy. D mass. D periodic energy. 13. Which formula is used to calculate acceleration? A time change in speed B time change in speed C change in speed time © Macmillan/McGraw-Hill D change in speed time 150 Chapter 11 • Using Forces Assessment Use with Chapter 11 Name Chapter Test B Date Answer the following questions. 16. Communicate Explain velocity. Why does a pilot need to know the velocity of a plane she is flying? Velocity measures both the speed and direction of a moving object. A pilot needs to know how fast the plane could fly and how far the trip would be. The data would allow the pilot to calculate how long the trip would take. The pilot also needs to know in which direction to fly. 17. Interpret Data Use the data in the chart to determine how fast each animal ran and which one was the fastest runner. Animal Cheetah Giraffe Distance 500 meters 500 meters Time 40 seconds 50 seconds The cheetah was the fastest runner. The cheetah ran at a pace of 12.5 meters per second. The giraffe ran at a pace of 10 meters per second. 18. Observe Look at the seesaw. Which part is the fulcrum? © Macmillan/McGraw-Hill Which part is the lever? The fulcrum is the part on which the lever rests or turns. It is located at the center of the seesaw. The lever is the part on top of the seesaw. Chapter 11 • Using Forces Assessment Use with Chapter 11 151 Chapter Test B Name Date Answer the following questions. 19. How do acceleration and deceleration compare to one another? Acceleration is the change in velocity over time for an object. Acceleration is the term that is generally used to describe an increase in velocity. Deceleration is the term used to describe a decrease in velocity. 20. What is potential energy? Give an example of potential energy. Potential energy is energy that is stored in the position or structure of an object. When a spring is pulled back, it has energy but it is not moving. The energy is stored. 21. Critical Thinking A group of experienced climbers are going rock climbing. What simple machine should they bring to help with the climbing? Why? They should bring a simple machine, such as a rope, to help with the climbing. A rope can act as a pulley to help them climb up the rocks. pool have noticed that the bottom of the pool is very slippery. You have been asked to come up with a plan for increasing the friction on the pool bottom. What would you suggest? Answers will vary but may include: They would add a bumpy coating to the bottom of the pool. 152 Chapter 11 • Using Forces Assessment Use with Chapter 11 © Macmillan/McGraw-Hill 22. Thinking Like a Scientist The children at the local Name Date Simple Machines Performance Assessment Materials Objective: Students will design a simple machine and explain their design to the class. • poster board Scoring Rubric • markers or crayons • pencil points Student chooses a type of simple • ruler machine to design, such as a lever, a wheel and axle, a pulley, an inclined plane, or a wedge. Student bases the design on common objects that can be found at home. Student accurately draws the simple machine, showing how it works. Student labels each part of the machine. Student explains to the class in a clear and concise manner how the simple machine works. points Student chooses a type of simple machine to design. Student bases the design on common objects that can be found at home. Student draws the simple machine, showing how it works with a few errors. Student labels most parts of the machine. Student explains to the class in a mostly clear and concise manner how the simple machine works. © Macmillan/McGraw-Hill points Student chooses a type of simple machine to design. Student bases the design on common objects that can be found at home. Student draws the simple machine, showing how it works with several errors. Student labels few parts of the machine. Student attempts to explain to the class how the simple machine works, but does not give a clear explanation. point Student does not choose a type of simple machine to design. Student does not attempt to draw the simple machine or explain how it works. Student does not label parts of the machine. Student does not attempt to explain to the class how the simple machine works. Student does not answer the Analyze the Results questions. Chapter 11 • Using Forces Assessment Use with Chapter 11 153 Performance Assessment Name Date Simple Machines Communicate You have been asked to design a simple machine that will get 50 buckets of water from the bottom of a hill to the top of the hill as quickly and easily as possible. You can only use items found around the home for your design. Draw a picture of your design. Label each part of the machine. Explain to the class how your simple machine would work to achieve the goal. Analyze the Results 1. Give an example of a situation when you think an inclined plane would be the best type of simple machine to use to move an object. Answers will vary but may include: An inclined plane is the best choice for taking a boat off of a trailer and putting it into the water. 2. What type of simple machine is a wheelbarrow? How do you know? A wheelbarrow is a second-class lever. I know this because a wheelbarrow has a resistance arm between the effort arm and the © Macmillan/McGraw-Hill fulcrum. 154 Chapter 11 • Using Forces Assessment Use with Chapter 11 Name Chapter Test A Date Using Energy Write the word or words that best complete each sentence in the spaces below. Words may be used only once. circuit image photon convection magnetic field prism frequency medium sound wave photon 1. A(n) temperature is a particle of light. 2. The flow of thermal energy through a liquid or gas caused by hot parts rising and cool parts sinking is called convection . 3. A(n) sound wave is made up of rarefactions and compressions traveling through air. 4. When light reflects off a shiny surface, a(n) image of the light source is seen. 5. Sound waves need to travel through a(n) 6. High notes have a greater frequency notes. medium . than low 7. The measurement of the average energy of molecules in temperature an object is . © Macmillan/McGraw-Hill 8. Light can be separated by using a(n) 9. A(n) prism . circuit is formed when an electric current passes through an unbroken path of conductors. 10. The directions of the magnetic forces around a magnet make up the Chapter 12 • Using Energy Assessment magnetic field . Use with Chapter 12 155 Chapter Test A Name Date Circle the letter of the best answer for each question. 11. The passing of heat through a material is called 14. What unit is used to measure resistance? A vibration. A joules B conduction. B meters C radiation. C ohms D convection. D volts 12. Through which material does sound travel the fastest? A steel B water C air D cotton 13. Which of the following items 15. An electric circuit that produces a magnetic field is called a(n) A current. B magnet. C coil. D electromagnet. is translucent? A mirror B clear glass C colored glass © Macmillan/McGraw-Hill D wood 156 Chapter 12 • Using Energy Assessment Use with Chapter 12 Name Chapter Test A Date Answer the following questions. 16. Communicate What is the difference between heat and temperature? Heat is the total amount of thermal energy an object releases. Temperature is the measurement of the average energy of molecules. 17. Interpret Data Look at the data below, then answer the questions. 3951Hz 3520Hz 3136Hz 2794Hz 2637Hz 2349Hz 2093Hz 1976Hz 1760Hz 1588Hz 1397Hz 1319Hz 1175Hz 1047Hz 988Hz 880Hz 784Hz 698Hz 659Hz 587Hz 523Hz 494Hz 440Hz 392Hz 349Hz 330Hz 294Hz 262Hz 247Hz 220Hz 196Hz 175Hz 165Hz 147Hz 131Hz 123Hz 110Hz 98Hz 87Hz 82Hz 73Hz 65Hz 62Hz 55Hz 49Hz 44Hz 41Hz 37Hz 33Hz 31Hz 28Hz Which source of music has the highest possible frequency range? Which has the lowest? Which generally has a higher frequency range, low notes or high notes? The piccolo has the highest frequency range. The bass has the lowest. High notes have a higher frequency range than low notes. 18. Make a Model Draw a picture of how a pencil will look in © Macmillan/McGraw-Hill a clear glass that is half filled with water. Students’ drawings should depict the pencil appearing to be bent where it meets the water. Chapter 12 • Using Energy Assessment Use with Chapter 12 157 Chapter Test A Name Date Answer the following questions. 19. How does a circuit work? The circuit gets energy from an electrical source, such as a battery, and must have an unbroken path of conductors. The voltage from the electrical source causes charged particles to move along the circuit. 20. Which material below is best for absorbing sound waves? How do you know? wool blanket wood floor metal chair A wool blanket is the best choice for absorbing sound waves. Surfaces that are soft, thick, and uneven are the most likely to absorb sounds instead of having sounds bounce off of them. 21. Critical Thinking The sand on a beach is very hot, but the water is still cold. Explain why this happens. Sand and water have different heat capacities. Sand has a low heat capacity and changes temperature quickly. Water has a high heat capacity and takes longer for its temperature to change. 22. Thinking Like a Scientist What test would determine whether or not an object is translucent? Answers will vary but may include: Hold the object up towards a light © Macmillan/McGraw-Hill source and see if any light shines through it. If light shines through it, it is translucent. 158 Chapter 12 • Using Energy Assessment Use with Chapter 12 Name Lesson 1 Test Date Circle the letter of the best answer for each question. 1. Which is an example of the flow of heat through conduction? A Hot air rises to the top of a room. B A hot-air balloon rises into the sky. C Heat flows from a hot liquid to a pot handle. D Heat causes winds to blow from the water to the land. 2. Which of the following materials is the poorest thermal conductor? A neon gas B water 3. If a house was viewed through infrared goggles, where would the most heat be seen? A in the basement B along the walls C on the first floor D near the roof 4. The table shows the thermal conductivity of some common materials. Thermal Conductivity high medium low C plastic D steel Material diamond, silver, gold, copper iron, steel, lead marble, ice, wood, concrete, rubber, water Which would be the best insulator? A diamond B gold C lead © Macmillan/McGraw-Hill D concrete Critical Thinking A student says that the Sun’s energy reaches Earth through conduction because the energy travels through the atmosphere. Is the student right or wrong? Explain. The Sun’s energy travels through empty space by means of radiation. When it reaches the atmosphere, it travels through conduction. Chapter 12 • Using Energy Assessment Use with Lesson 1 Heat 159 Lesson 2 Test Name Date Circle the letter of the best answer for each question. 1. The table shows the speed of sound waves in different materials. Material solid liquid gas vacuum Speed of sound waves fast medium slow sound cannot travel through a vacuum 3. The loudness of a sound depends on the sound wave’s A frequency. B pitch. C amplitude. D density. 4. What is an echo? Sound would travel most quickly through A wood. B water. C air. D outer space. A the absorption of sound waves B the transmission of sound waves C the reflection of sound waves D the vibration of sound waves 2. How does sonar work? A by passing sound waves through objects B by speeding up sound waves in different materials C by locating objects in outer space D by bouncing sound waves Critical Thinking What are some possible uses of sonar on land? Sound travels at different speeds through different materials. Sonar could be used to locate underground features such as caves. It could also be used to locate oil or natural gas deposits. 160 Chapter 12 • Using Energy Assessment Use with Lesson 2 Sound © Macmillan/McGraw-Hill off of objects Name Lesson 3 Test Date Circle the letter of the best answer for each question. 1. Light is acting like a wave when it 3. The bending of light rays is called A travels in a straight line. A refraction. B reflects off a surface. B reflection. C has momentum. C transmission. D is made of particles. D translucence. 2. The diagram shows a light wave striking a mirror. 4. Which material is translucent? A air B plastic wrap C wax paper D sand What is this diagram illustrating? A frequency B the electromagnetic spectrum C the law of reflection © Macmillan/McGraw-Hill D the law of refraction Critical Thinking Explain why grass and leaves appear green to our eyes. An object appears to be the colors of light that it scatters. Therefore, grass and leaves scatter green light and absorb both higher and lower frequency light waves. Chapter 12 • Using Energy Assessment Use with Lesson 3 Light 161 Lesson 4 Test Name Date Circle the letter of the best answer for each question. 1. Resistance to electricity is measured in 3. Which unit is used to measure electrical energy? A watts. A watt B amps. B amp C volts. C volt D ohms. D ohm 2. A path with little to no resistance that connects the two ends of an electrical source is a(n) A parallel circuit. B series circuit. C short circuit. D electric circuit. 4. Static cling occurs when A static electricity forms. B objects with opposite charges stick together. C static electricity flows through a circuit. D sparks form from static buildup. Critical Thinking Why is it important to avoid touching objects stuck in power lines? If current is flowing through power lines, a person can be electrocuted. If a person touches two power lines together, or one power line and the © Macmillan/McGraw-Hill ground, a strong electric current will flow through the person. 162 Chapter 12 • Using Energy Assessment Use with Lesson 4 Electricity Name Lesson 5 Test Date Circle the letter of the best answer for each question. 1. An electromagnet works because 3. A device that creates electric A moving electrons generate current by spinning an electric coil between the poles of a powerful magnet is a(n) B alternating current A electric motor. C a generator is powerful. C generator. D electrons flow through D maglev train. magnetic forces. completes a circuit. copper wire. 2. An electromagnet is different from a permanent magnet because an electromagnet A is magnetic. B can push and pull. C can attract some metals. B electromagnet. 4. A device that lowers the voltage of electricity is called A a resistor. B a turbine. C a transformer D a generator. D can turn on and off. Critical Thinking Explain how maglev devices operate. Why are they so efficient? Maglev devices operate by using electromagnets to push objects apart. By rapidly switching the poles of the magnets, objects can be propelled © Macmillan/McGraw-Hill forward. Maglev devices are efficient because there is no friction. Chapter 12 • Using Energy Assessment Use with Lesson 5 Magnetism 163 Chapter Test B Name Date Using Energy Write the word or words that best complete each sentence in the spaces below. Words may be used only once. alternating current pitch static electricity grounding radiation vacuum heat resistor magnetism spectrum heat 1. A type of energy that is measured in joules (J) is resistor 2. A light bulb is an example of a(n) . . 3. When objects rub together and electrons are transferred from one object to the other, static electricity forms. 4. Electric current that rapidly changes directions is called alternating current . 5. Earth’s surface is warmed by radiation the Sun. from 6. Sound cannot travel through a(n) vacuum . 7. Musical notes are defined by their pitch . 8. An object can be protected from a buildup of static grounding it. 9. Two metals that can push or pull each other have magnetism . 10. The band of color in a rainbow is called a(n) 164 Chapter 12 • Using Energy Assessment spectrum . Use with Chapter 12 © Macmillan/McGraw-Hill electricity by Name Chapter Test B Date Circle the letter of the best answer for each question. 11. A car’s horn sounds different as the car approaches. The change of pitch is due to 14. All of the following are examples of devices that use electromagnets except A electromagnetism. A a doorbell B the Doppler effect. B a refrigerator magnet C the absorption of sound. C a television set D the creation of a vacuum. D an electric motor 12. What unit is used to measure electrical energy? A ohms B joules C volts D meters 15. Light has properties of A waves only. B particles only. C both waves and particles. D neither waves nor particles. 13. Which of the following is the best thermal conductor? A rubber B plastic C iron © Macmillan/McGraw-Hill D wood Chapter 12 • Using Energy Assessment Use with Chapter 12 165 Chapter Test B Name Date Answer the following questions. 16. Interpret Data Look at the data below and complete the question. ? wool poor metal spoon good plastic knife poor drinking glass good What would be a good title for this chart? Answers will vary but may include: Thermal Conductivity of Materials A B 17. Make a Model Which electromagnet shown is the strongest? How do you know? Electromagnet B is the strongest. The more you wrap the coil around the iron nail, the more magnetic strength the nail will have. 18. Communicate Explain why compass needles do not point to Earth’s geographic North Pole. Compasses point to Earth’s magnetic north pole. Earth’s geographic © Macmillan/McGraw-Hill North Pole is not located in the same location. 166 Chapter 12 • Using Energy Assessment Use with Chapter 12 Name Chapter Test A Date Answer the following questions. 19. A manager at an amusement park wants a mirror that will produce an upright and reduced image. What kind of mirror should she use? What kind of mirror should she use for an upside-down image? Convex mirrors will produce an upright, reduced image; some concave mirrors will produce an upside-down image. 20. What effect does a switch have on a circuit? A switch can open or close the circuit. When a switch is closed, the path is complete and electrical energy can move through the circuit. When a switch is open, the electrical energy cannot flow through the circuit. 21. Critical Thinking If you were trying to heat soup, would you want to use a good thermal conductor or a good thermal insulator? Explain your answer. I would want a good thermal conductor. I would want the heat to transfer from the stove top to my soup, so I would want a metal pot that conducts heat well. 22. Thinking Like a Scientist Maglev (magnetic levitation) trains do not touch their tracks. Why is this? © Macmillan/McGraw-Hill When two like poles of magnets face each other, they will repel. Electromagnets in the track and in the train have alternating north and south poles. Maglev trains move because the electromagnets switch poles and push the trains along without the trains touching the tracks. Chapter 12 • Using Energy Assessment Use with Chapter 12 167 Performance Assessment Name Electricity Safety Date Materials Objective: Students will learn some practical electricity safety tips and create a brochure to share with their classmates. • pen or pencil Scoring Rubric • crayons, markers, or colored pencils • white or tan paper points Student creates a brochure that includes at least five practical safety tips related to electricity. Student includes accurate information about how to stay safe when using electricity. Information is presented in a clear, concise manner that is easy for other students to understand. Illustrations reinforce the information in the text. The student answers Analyze the Results questions accurately. points Student creates a brochure that includes at least two practical safety tips related to electricity. Student includes some accurate information about how to stay safe when using electricity. Information is not presented clearly or is not concise. Some information is difficult for other students to understand. Few illustrations reinforce the information presented in the text. The student answers the Analyze the Results questions with many errors. point Student creates a brochure that includes only one practical safety tip related to electricity. Student includes some accurate information about how to stay safe when using electricity. Information is not presented clearly and is difficult to understand. Illustrations do not reinforce the information presented in the text. The student does not answer the Analyze the Results questions accurately. 168 Chapter 12 • Using Energy Assessment Use with Chapter 12 © Macmillan/McGraw-Hill points Student creates a brochure that includes three or four practical safety tips related to electricity. Student includes accurate information about how to stay safe when using electricity. Information is presented in a clear manner that other students can understand. Most illustrations reinforce the information presented in the text. The student answers Analyze the Results questions with few errors. Name Performance Assessment Date Electricity Safety Electricity can be very dangerous when not used properly. It can cause serious injury and even death. It is important to know how to use electricity safely in your home and school. It is also important to know when to stay away from electricity completely. Design a brochure that includes at least five tips for the safe use of electricity. Share your brochure with the class. Analyze the Results 1. Why is it not safe to have a radio next to the tub while you are taking a bath? Water is a good conductor of electricity. If the radio fell into the tub, the electricity would flow through the water and into your body and cause great harm. 2. What should you do if you go outside after a storm and see that a power line has been knocked down? You should get away from the area immediately. You should get a responsible adult who can block off the area and call the power company to get the power line fixed. 3. Why do newer outlets have test and reset buttons? © Macmillan/McGraw-Hill They protect the outlet and the things plugged into it when there is a short in the circuit. This can prevent electrical fires. Chapter 12 • Using Energy Assessment Use with Chapter 12 169