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Subject: Physical Science Grade Level: 9-12 Unit Title: Electricity and Magnetism Big Idea/Theme: Electricity and Magnetism Understandings: Understand electricity and magnetism and their relationship. Timeframe Needed for Completion: 15 days Grading Period: 1st Nine Weeks Essential Questions: Essential Standards: What is the connection between electricity and magnetism? PSc.3.3.1 Summarize static and current electricity. Why is electricity important to us? PSc.3.3.2 Explain simple series and parallel DC circuits in How would your daily life change if magnets no longer terms of Ohm’s law. existed? PSc.3.3.3 Explain how current is affected by changes in What is so shocking about electricity? composition, length, temperature, and diameter of wire. PSc.3.3.4 Explain magnetism in terms of domains, interactions of poles, and magnetic fields. PSc.3.3.5 Explain the practical application of magnetism. Essential Skills/Vocabulary: PSc.3.3.1 • Identify interactions between charged objects - opposite charges attract and like charges repel. • Compare the three methods of charging objects: conduction, friction, and induction – explain the redistribution or transfer of electrons for each method for both positively and negatively charged objects. • Compare static and current electricity related to conservation of charge and movement of charge (without calculations). PSc.3.3.2 • Interpret simple circuit diagrams using symbols. • Explain open and closed circuits. Assessments/Activities: Quick Write: Static Electricity Static Electricity Lab Fields of Like Charge Inquiry Activity Create a “PSA” assignment for cellular phones at the gas pumps. Quick Write: What is the difference between a wet cell and a dry cell? Hot Fingers-How Does current Travel in a Battery? Inquiry Activity Lab: Comparing Series and Parallel Circuits Writing Prompt: How would your school day de different if your school was wired on a series circuit? Create a model of a room that is wired in a parallel circuit. Ohm’s Law Practice Problems Electrical Power Practice problems • Apply Ohm’s law and the power equation to simple DC Circuits: V=IR & P=VI • Compare series and parallel circuits. Conceptually explore the flow of electricity in series and parallel circuits. • Explain how the flow of electricity through series and parallel circuits is affected by voltage and resistance. PSc.3.3.3 • Explain how the wire in a circuit can affect the current present – for a set voltage, the current in a wire is inversely proportional to its resistance (more current exists where resistance is low); the resistance of a material is an intensive property called resistivity; increasing the length of a wire increases the resistance; increasing the temperature increases the resistance; increasing the diameter of a wire decreases its resistance. • Explain using a cause-and-effect model how changes in composition, length, temperature, and diameter of a wire would affect the current in a circuit. PSc.3.3.4 • Describe the characteristics and behaviors of magnetic domains. • Explain the attractions of unlike poles and the repulsion of like poles in terms of magnetic fields. • Explain magnetic fields produced around a currentcarrying wire and wire coil (solenoid). • Explain the relationship between strength of an electromagnet and the variance of number of coils, voltage, and core material. PSc.3.3.5 • Explain the relationship between electricity and magnetism Electricity mini-test Quick Write: Why are magnets important? Observing Magnetic Interference Lab Writing Prompt: How would your life change if magnetism stopped in the next 10 minutes. Lab: Electromagnet 20 word Gist: How would you make a better electromagnet? Read The War of Currents article and respond. Electricity and Magnetism Lab Writing Prompt: Why was the discovery of alternating current so important? Magnetism mini-test Electricity and Magnetism Unit Test 21st Century Skills Communication Skills Conveying thought or opinions effectively When presenting information, distinguishing between relevant and irrelevant information Explaining a concept to others Interviewing others or being interviewed Computer Knowledge Using word-processing and database programs Developing visual aides for presentations Using a computer for communication Learning new software programs Employability Skills Assuming responsibility for own learning Persisting until job is completed Working independently Developing career interest/goals Activities in practical applications such as generators and motors – the process of electromagnetic induction in electric generators that converts mechanical energy to electrical energy; transformation of electric energy to mechanical energy in motors. • Extrapolate other practical applications such as security cards (ATM, credit or access cards), speakers, automatic sprinklers, traffic signal triggers, seismometers, battery chargers, transformers, AC-DC adapters. Responding to criticism or questions Information-retrieval Skills Searching for information via the computer Searching for print information Searching for information using community members Language Skills - Reading Following written directions Identifying cause and effect relationships Summarizing main points after reading Locating and choosing appropriate reference materials Reading for personal learning Language Skill - Writing Using language accurately Organizing and relating ideas when writing Proofing and Editing Synthesizing information from several sources Documenting sources Developing an outline Writing to persuade or justify a position Creating memos, letters, other forms of correspondence Teamwork Taking initiative Working on a team Thinking/Problem-Solving Skills Identifying key problems or questions Evaluating results Developing strategies to address problems Developing an action plan or timeline Materials Suggestions: Lab supplies