Name ___________________________________________
7th Science Exam Review
Spring Semester Exam 2015
The section assignments and their due dates are listed in the table below. Each section will be
checked for a completion grade on the due date. Your 5 grades will be averaged for a minor
grade. You may work ahead if you wish. We will spend Friday, 5/22 and Tuesday, 5/26
reviewing together as a class.
Question
Numbers
Section
Due Date
1-18
Chemistry
Wednesday, 5/13
19-43
Ecology 1
Thursday, 5/14
44-69
Ecology 2
Tuesday, 5/19
70-92
Environmental Changes
Wednesday, 5/20
93-120
Physics & Astronomy
Thursday, 5/21
EXAM SCHEDULE
Thursday – 5/28
4th & 5th Period Exams
Early Release @ 12:00
Wednesday - 5/27
1st, 2nd, & 3rd Period Exams
Regular Release @ 3:15
Friday – 5/29
6th & 8th Period Exams
Early Release @ 12:00
NO SECTIONS WILL BE ACCEPTED FOR “LATE CREDIT” AFTER 5/21.
THE KEY WILL BE POSTED ONLINE on Friday 5/22.
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CHEMISTRY
Know the definitions, uses and examples of the following words:
1. Matter:
2. Physical Property:
3. Chemical Property:
4. Physical Change:
a. Give 3 examples:
5. Chemical Change:
a. Give 3 examples:
6. Signs of a chemical change:
7. Law of Conservation of Mass/Matter:
8. Atom:
9. Element:
10. Molecule:
11. Compound:
a. Give an example of something that is a molecule, but not a compound:
b. Give an example of something that is a molecule AND a compound:
12. Pure Substance:
13. Four Types of Organic Compounds:
*Also know how each example is broken down by our bodies
a. _______________________________________
b. _______________________________________
c. _______________________________________
d. _______________________________________
*Which element do all organic compounds contain? _____________________
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14. Your digestive system must break down carbohydrates into _______________________ so your body can
use them.
15. Acid:
16. Base:
17. Neutral:
18. pH:
ECOLOGY 1
19. Biome-
*Know general characteristics of the world’s major biomes
*be familiar with structural/behavioral characteristics needed to survive in different biomes
20. Adaptation-
21. Structural Adaptation-
22. Behavioral Adaptation-
23. Instinct-
24. Migration-
25. Hibernation-
26. Learned behavior-
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27. Mimicry-
28. Camouflage-
29. Natural Selection-
30. Selective Breeding-
31. A bird is born with a beak that is longer than the beak of other birds in the species. The
longer beak helps the bird catch more food, which makes it healthier than the other birds, this will live longer
and breed more than the other birds. Is this an example of natural selection, or selective breeding?
EXPLAIN.
32. A pet store is breeding two different types of dogs, hoping they will produce a combination of both of the
dogs traits in their offspring. Is this an example of natural selection, or selective breeding? EXPLAIN.
33. Biotic 34. Abiotic 35. Symbiosis a. parasitism b. mutualism c. commensalism 36. Limiting factor 37. Competition 38. Predation 39. Niche 40. Habitat -
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41. Species 42. Population 43. Community -
ECOLOGY 2
Define the following words:
44. Stimulus45. Response46. Internal stimulus47. External stimulus48. Phototropism49. Geotropism50. Producer 51. Decomposer 52. Consumer 53. Biomagnification –
54. Give 2 examples each of internal and external stimulus & response:
55. Explain the difference between the terms autotroph and heterotroph.
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56. Use the key on the right to identify the organisms below.
Common Name
1. dog
2. shark
3. rose
4. skunk
5. turkey
6. dolphin
7. eagle
Scientific Name
1. animal
not an animal
2. has wings
no wings
3. has feathers
no feathers
4. flies high
does not fly high
5. often yellow
not yellow
6. lives in water
lives on land
7. has fluffy fur
no fluffy fur
8. common pet
not a common pet
go to 2
go to 11
go to 3
go to 6
go to 4
Ochloerotatus taeniorhynchus
go to 5
Meleagris gallopavo
Serinus canaria
Haliaeetus leucocephalus
go to 9
go to 7
go to 8
Bos taurus
Canis familiaris
Mephitis mephitis
9. has fins
no fins
10. razor sharp teeth
pegged, pointy teeth
11. green
not green
12. grows tall
does not grow tall
13. can be poisonous
not poisonous
go to 10
Haematopus ostralegus
Carcharodon carcharias
Tursiops truncates
go to 12
go to 13
Pinus ponderosa
Rhus toxicodendron
Boletus edulis
Rosa sylvestris
57. Diagram a simple food chain (using any organisms) and label the following parts; producer, primary
consumer, secondary consumer, tertiary consumer, and quaternary consumer.
58. What do the arrows in a food chain represent? Explain why the arrows on food chain point in a specific
direction.
59. Describe the 10% rule and how it applies to food chains. Also, explain what happens to the other 90% of
the available energy.
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60. Using your food chain from #43, design and solve one 10% rule problem for your food web.
61. Write out the chemical equation for photosynthesis.
62. What types of organisms can photosynthesize?
63. What type of energy transformation occurs during photosynthesis?
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Pond Grass
Grasshopper
Shrimp
Bass
Heron
Shrew
Owl/Hawk
Duck
Songbird
Sandpiper
64. In the above food web, identify a:
Producer:
__________________
Primary Consumer:
__________________
Secondary Consumer:
__________________
Tertiary Consumer:
__________________
65. What organisms would potentially suffer if the grasshopper population greatly decreased due to harmful
pesticides? How might this change impact the overall food web?
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66. What do the arrows represent (in a food chain/web)?
67. At which level in a food chain/web is there the greatest amount of available energy?
68. Explain the difference between a food web and a food chain.
69. If you ate 3 big fish, which had each eaten 5 small fish, who had each had 10 insects, who had each had 25
plant pieces, how much methylmercury would be in you? Assume that each plant piece each has one drop of
methylmercury.
ENVIRONMENTAL CHANGES
Know definitions and examples of the following words:
70. Weathering71. Erosion72. Deposition73. Condensation74. Precipitation75. Transpiration76. Evaporation77. Watershed78. Aquifer79. Runoff80. Water Table81. Ground Water82. Surface Water-
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83. Describe the steps of ecological succession. Use the words climax community, pioneer species, and
biodiversity in your explanation.
84. What is the difference between primary and secondary succession?
85. Explain the process of eutrophication.
86. What are the 3 “R’s” of conservation?
a.
b.
c.
87. What are fossil fuels? Describe how they are formed; and list the 3 types.
88. Explain the differences between renewable and nonrenewable resources. List 2 examples of each.
89. Why do humans continue to use nonrenewable resources, if they’re so bad for the environment? Think of
2 reasons.
90. Give 3 examples how humans negatively impact the world around us- including the watersheds and
ecosystems.
91. What is an anthropogenic change?
92. List the 5 most common anthropogenic changes.
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PHYSICS & ASTRONOMY
93. Define work:
94. What is the formula for work?
95. List the units for work, force, and distance.
96. What are the 3 ways that simple machines help us?
97. Name the 4 types of simple machines discussed in class, sketch one real life example, and explain how we
use them to make work easier to accomplish.
Name:
Sketch:
Explain:
Name:
Explain:
Name:
Sketch:
Explain:
Sketch:
Name:
Sketch:
Explain:
98. What is an advantage of using simple machines to help you do work?
99. What is the general disadvantage of using simple machines to help you complete work?
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100.
Write the equation for calculating the Mechanical Advantage of a ramp:
Use the following diagrams of inclined planes to answer questions 110-111.
Plane 1
1m
Plane 2
5m
9m
3m
Plane 3
3m
45 m
101. Which inclined plane has the HIGHEST mechanical advantage?
102. Which inclined plane has a mechanical advantage of 3?
Practice Problems- Remember to SHOW WORK and include CORRECT UNITS!
103. How much force would be required to push a chair 22 m down the hall, doing a total of 88J of work?
104. What is the height of the table if the inclined plane has a mechanical advantage of 4 and the length of the
slope is 24 m?
105. If a ramp has a mechanical advantage of 9, and it is 36 meters long, how high is it off of the ground?
106. It will take 400 N of force for Mrs. McCormick’s students to lift a piano 4 meters up onto the stage.
Luckily, Madeline suggests they use an inclined plane to make their job easier. If the inclined plane is 8
meters long, how much force will the students need to use to push the piano up on the stage? *Must include
correct units!!*
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107. What is energy?
108. Describe the difference between potential and kinetic energy.
109. What is an energy transformation? Give two examples.
110. List at least 5 different forms of energy, and an example of each:
111. What does the Law of Conservation of Energy state?
112. List all 7 fundamental traits of living things:
113.What are the 4 qualities of Earth that enable it to sustain life?
114.How is human life sustained by the sun?
115.What are the 4 spheres that make up the Earth?
116.What gases make up our Earth’s atmosphere?
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117.What are the 2 most important functions of our Earth’s atmosphere?
118.What is the difference between mass and weight?
119.How is the mass of a planet related to the amount of gravity on a planet?
120.Why is water such an important resource to us on Earth?
Hooray! You are finished!! Check your answers against the Key
(posted online Friday 5/22).
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