MADISON PUBLIC SCHOOLS Grade 8 Science Authored by: Catherine Tahlmore Reviewed by: Mr. Lee S. Nittel Director of Curriculum and Instruction Mr. Tom Paterson K12 Supervisor of Science and Technology Approval Date: Fall 2012 Members of the Board of Education: Lisa Ellis, President Patrick Rowe, Vice-President Kevin Blair Thomas Haralampoudis Linda Gilbert James Novotny David Arthur Shade Grahling Superintendent: Dr. Michael Rossi Madison Public Schools 359 Woodland Road, Madison, NJ 07940 www.madisonpublicschools.org I. OVERVIEW The eighth grade science course is designed to provide the middle school student with experiences in the physical sciences and to students to increase understanding of basic scientific knowledge and processes. The topics studied include the scientific method, matter and energy, force and motion, the nature of light, the transfer of heat, elements, compounds and mixtures, atomic structure, and the study of acids, bases, and salts. Through the use of laboratory investigations, class discussions and evaluation, the students are required to analyze data, understand both concrete and abstract concepts and apply knowledge to solve new problems. II. RATIONALE As stated in the New Jersey Core Curriculum Content Standards for science, “All students can and must learn enough science to assume their roles as concerned citizens…” The eighth grade curriculum provides the student with the means to achieve that end. This course provides an opportunity for students to develop an understanding of fundamental scientific principles as well as the skills necessary to perform science investigation. Attitudes, such as curiosity, open mindedness, and a thirst for knowledge, all essential to scientific inquiry, will be stressed. Upon completion of the course, the student will have the ability to more fully describe, discuss and explain the core ideas and principals of both physics and chemistry. III. STUDENT OUTCOMES A. The following list identifies the NJ Core Curriculum Content Standards: 5.1 Science Practices: All students will understand that science is both a body of knowledge and an evidence-based, model-building enterprise that continually extends, refines, and revises knowledge. The four Science Practices strands encompass the knowledge and reasoning skills that students must acquire to be proficient in science. A. Understand Scientific Explanations: Students understand core concepts and principles of science and use measurement and observation tools to assist in categorizing, representing, and interpreting the natural and designed world. 5.1.8.A.1 Demonstrate understanding and use interrelationships among central scientific concepts to revise explanations and to consider alternative explanations. 5.1.8.A.2 Use mathematical, physical, and computational tools to build conceptual-based models and to pose theories. 5.1.8.A.3 Use scientific principles and models to frame and synthesize scientific arguments and pose theories. B. Generate Scientific Evidence Through Active Investigations: Students master the conceptual, mathematical, physical, and computational tools that need to be applied when constructing and evaluating claims. 2 5.1.8.B.1 Design investigations and use scientific instrumentation to collect, analyze, and evaluate evidence as part of building and revising models and explanations. 5.1.8.B.2 Gather, evaluate, and represent evidence using scientific tools, technologies, and computational strategies. 5.1.8.B.3 Use qualitative and quantitative evidence to develop evidence-based arguments. 5.1.8.B.4 Use quality controls to examine data sets and to examine evidence as a means of generating and reviewing explanations. C. Reflect on Scientific Knowledge: Scientific knowledge builds on itself over time. 5.1.8.C.1 Monitor one’s own thinking as understandings of scientific concepts are refined. 5.1.8.C.2 Revise predictions or explanations on the basis of discovering new evidence, learning new information, or using models. 5.1.8.C.3 Generate new and productive questions to evaluate and refine core explanations. D. Participate Productively in Science: The growth of scientific knowledge involves critique and communication, which are social practices that are governed by a core set of values and norms. 5.1.8.D.1 Engage in multiple forms of discussion in order to process, make sense of, and learn from others’ ideas, observations, and experiences. 5.1.8.D.2 Engage in productive scientific discussion practices during conversations with peers, both face-to-face and virtually, in the context of scientific investigations and model-building. 5.1.8.D.3 Demonstrate how to safely use tools, instruments, and supplies. 5.1.8.D.4 Handle and treat organisms humanely, responsibly, and ethically. 5.2 Physical Science: All students will understand that physical science principles, including fundamental ideas about matter, energy, and motion, are powerful conceptual tools for making sense of phenomena in physical, living, and Earth systems science. A. Properties of Matter: All objects and substances in the natural world are composed of matter. Matter has two fundamental properties: matter takes up space, and matter has inertia. 5.2.6.A.1 Determine the volume of common objects using water displacement methods. 5.2.6.A.2 Calculate the density of objects or substances after determining volume and mass. 5.2.6.A.3 Determine the identity of an unknown substance using data about intrinsic properties. 5.2.8.A.1 Explain that all matter is made of atoms, and give examples of common elements. 5.2.8.A.2 Analyze and explain the implications of the statement “all substances are composed of elements.” 5.2.8.A.3 Use the kinetic molecular model to predict how solids, liquids, and gases would behave under various physical circumstances, such as heating or cooling. 5.2.8.A.4 Predict the physical and chemical properties of elements based on their positions on the Periodic Table. 5.2.8.A.5 Identify unknown substances based on data regarding their physical and chemical properties. 5.2.8.A.6 Determine whether a substance is a metal or nonmetal through student-designed investigations. 5.2.8.A.7 Determine the relative acidity and reactivity of common acids, such as vinegar or cream of tartar, through a variety of student-designed investigations. 3 B. Changes in Matter: Substances can undergo physical or chemical changes to form new substances. Each change involves energy. 5.2.6.B.1 Compare the properties of reactants with the properties of the products when two or more substances are combined and react chemically. 5.2.8.B.1 Explain, using an understanding of the concept of chemical change, why the mass of reactants and the mass of products remain constant. 5.2.8.B.2 Compare and contrast the physical properties of reactants with products after a chemical reaction, such as those that occur during photosynthesis and cellular respiration. C. Forms of Energy: Knowing the characteristics of familiar forms of energy, including potential and kinetic energy, is useful in coming to the understanding that, for the most part, the natural world can be explained and is predictable. 5.2.6.C.1 Predict the path of reflected or refracted light using reflecting and refracting telescopes as examples. 5.2.6.C.2 Describe how to prisms can be used to demonstrate that visible light from the Sun is made up of different colors. 5.2.6.C.3 Relate the transfer of heat from oceans and land masses to the evolution of a hurricane. 5.2.8.C.1 Structure evidence to explain the relatively high frequency of tornadoes in “Tornado Alley.” 5.2.8.C.2 Model and explain current technologies used to capture solar energy for the purposes of converting it to electrical energy. D. Energy Transfer and Conservation: The conservation of energy can be demonstrated by keeping track of familiar forms of energy as they are transferred from one object to another. 5.2.6.D.1 Use simple circuits involving batteries and motors to compare and predict the current flow with different circuit arrangements. 5.2.8.D.1 Relate the kinetic and potential energies of a roller coaster at various points on its path. 5.2.8.D.2 Describe the flow of energy from the Sun to the fuel tank of an automobile. E. Forces and Motion: It takes energy to change the motion of objects. The energy change is understood in terms of forces. 5.2.6.E.1 Model and explain how the description of an object’s motion from one observer’s view may be different from a different observer’s view. 5.2.6.E.2 Describe the force between two magnets as the distance between them is changed. 5.2.6.E.3 Demonstrate and explain the frictional force acting on an object with the use of a physical model. 5.2.6.E.4 Predict if an object will sink or float using evidence and reasoning. 5.2.8.E.1 Calculate the speed of an object when given distance and time. 5.2.8.E.2 Compare the motion of an object acted on by balanced forces with the motion of an object acted on by unbalanced forces in a given specific scenario. 4 IV. COMMON CORE STATE STANDARDS FOR ENGLISH LANGUAGE ARTS AND LITERACY IN SCIENCE (Grades 6-8) Reading Students will: 1. Cite specific textual evidence to support analysis of science and technical texts. 2. Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions. 3. Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. 4. Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6–8 texts and topics. 5. Analyze the structure an author uses to organize a text, including how the major sections contribute to the whole and to an understanding of the topic. 6. Analyze the author’s purpose in providing an explanation, describing a procedure, or discussing an experiment in a text. 7. Integrate quantitative or technical information expressed in words in a text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph, or table). 8. Distinguish among facts, reasoned judgment based on research findings, and speculation in a text. 9. Compare and contrast the information gained from experiments, simulations, video, or multimedia sources with that gained from reading a text on the same topic. 10. By the end of grade 8, read and comprehend science/technical texts in the grades 6–8 text complexity band independently and proficiently. Writing Students will: 1. Write arguments focused on discipline-specific content. a. Introduce claim(s) about a topic or issue, acknowledge and distinguish the claim(s) from alternate or opposing claims, and organize the reasons and evidence logically. b. Support claim(s) with logical reasoning and relevant, accurate data and evidence that demonstrate an understanding of the topic or text, using credible sources. c. Use words, phrases, and clauses to create cohesion and clarify the relationships among claim(s), counterclaims, reasons, and evidence. d. Establish and maintain a formal style. e. Provide a concluding statement or section that follows from and supports the argument presented. 5 IV. ESSENTIAL QUESTIONS AND CONTENT A. Introduction to Physical Science How do scientists solve problems? How do scientists measure the general properties of matter? What metric units are used to describe the general properties of matter? How does scientific knowledge affect our lives? B. Force and Motion What is energy and what are the main forms of energy? How is heat energy transferred? What are the fundamental quantities and units used describe motion and how are they calculated? How do forces affect motion? How do Newton’s three laws describe motion? C. Energy in Waves What is a wave and describe the different types of waves? What is the relationship between wavelength and frequency? How does color addition differ from color subtraction? D. The Nature of Light How does light reflect off surfaces? How does light refract when passing though substances? What kinds of images are produced by reflection and refraction? What scientific advances have been made possible by the knowledge about the behavior of light? E. Elements, Compounds, and Mixtures How is matter classified? What are the properties of elements, compounds, and mixtures? How do physical and chemical changes differ? F. Atomic Structure How does the structure of the atom relate to the chemical and physical properties of matter? How is the arrangement of the periodic table useful to scientists? G. Acids, Bases, and Salts What are the four basic types of chemical reactions? How does the law of conservation of matter apply to chemical reactions? What are the major properties of acids, bases, and salts? H. Laboratory and Experimental Situations What scientific approach can be taken to address a problem? What equipment and technology can be chosen to best investigate a particular problem? 6 V. STRATEGIES Strategies may include: Power Point Presentations Teacher-guided class discussions Overhead transparencies Hand outs Demonstrations Teacher lecture & modeling Computer animations, simulations and web quests Laboratory investigations (both group & individual) VI. Small group discussions & activities Videos Scientific Games Research Model building Study Guides GEPA review questions, games, & activities Lab practical Projects Presentations Final Exam EVALUATION Assessments may include: Quizzes/Tests Homework Class work Notebook Lab reports VII. REQUIRED RESOURCES Textbook: VIII. Exploring Physical Science. Prentice Hall, 1999. SCOPE AND SEQUENCE Introduction to Physical Science (4 weeks) What is Science? o Drawing conclusions-observation vs. assumption Science and Technology o Science Makes Technology Possible Scientific Method o Safety in the Lab o The scientific method State the problem Gather information Make a hypothesis Devise an experiment Draw a conclusion o A controlled experiment controls variable 7 What is Physical Science? o Matter and Energy o Properties of Matter Mass. weight, volume, density Force and Motion (7 weeks) What is Energy? Potential and Kinetic Energy Five forms of energy mechanical heat chemical electromagnetic nuclear Law of Conservation of Energy Transfer of Heat Conduction Convection Radiation Motion Frames of Reference Speed (rate) average speed constant speed Velocity Acceleration Combining Forces-balanced and unbalanced Friction Gravitational Force Newton’s First Law of Motion: Inertia Newton's Second Law: Force = Mass X Acceleration Newton's Third Law: For every action, an equal and opposite reaction Force Energy in Waves (4.5 weeks) What is a wave? o Mechanical waves o Electromagnetic waves Shapes of Waves o Transverse Waves crest and trough wavelength frequency amplitude o Compressional (Longitudinal) Waves compression and rarefaction wavelength frequency amplitude o Relationship between wavelength and frequency 8 Characteristics of a Pendulum o Relationship between Length and Frequency Sound Waves o Characteristics of Sound o Doppler effect o Resonance The Electromagnetic Spectrum The Visible Spectrum The Nature of Light (4 weeks) Reflection o Law of Reflection o Regular and Diffuse Reflection o Mirrors Refraction o Laws of Refraction o Lenses Uses of Light o Optical fibers o The Eye o Lasers o Telescopes o Vision correction, myopia, hyperopia, astigmatism Elements, Compounds, and Mixtures (4 weeks) Properties of Matter o Physical Properties o properties of solids, liquids, gases, plasma o changes in state o Chemical Properties Elements o Atoms and Symbols o o Major Characteristics Molecules, Formulas, and Naming Compounds o o o Contrasting Mixtures and Compounds Heterogeneous and Homogeneous Mixtures Solubility Compounds Mixtures 9 Atomic Structure (3 weeks) Model of the Atom o What is a Model? History of Atomic Theory Structure of the Atom o Number and Location of Protons, Neutrons, Electrons Chemical Bonding o Ionic and Covalent Bonds The Periodic Table o Arrangement of The Periodic Table Chemical and Physical Changes o Characteristics of Chemical and Physical Changes Acids, Bases, and Salts & Reactions (4 weeks) Types of Chemical Reactions Properties of Acids, Bases, and Salts Neutralization Use of Indicators Laboratory and Experimental Situations (throughout year) Experimental design Instrument selection and use Data analysis and interpretation Graphical analysis Error identification and analysis Result presentation Future question generation 10