Electricity+UNIT

Describe the properties of magnets.

 * What is a magnetic field? What causes it?
 * What is electromagnetism? Explain how an electromagnet works.
 * What does electric current produce?
 * What strengthens a magnetic field by a solenoid?
 * //Describe// the two devices that strengthen the magnetic field of a current-carrying wire.
 * What are some practical applications of electromagnets?
 * Why does a current-carrying wire cause a compass needle to move?
 * Describe the parts of an electric motor and how a motor works.
 * What is a galvanometer? How does it work?
 * What did Faraday discover? What did his experiments show? (How is electromagnetism induced?)
 * What is the relationship between electric current and a magnetic field?
 * Describe two ways a magnet can induce an electric current in a wire.
 * Describe the parts of a generator and how it works.
 * What are three sources of energy that are used to generate electrical energy?
 * What does a transformer do?
 * Describe the differences between a step up and a step down transformer?
 * Explain how the alternating current in the primary coil of a transformer causes a current to be produced in the secondary coil.
 * Describe what happens to the electric current that comes to your home from the power plant to your home?

Magnets & Magnetism Study Guide (March 14th)
1. //Describe// the properties of magnets. 2. //Describe// the four types of magnets. 3. What is the difference between a magnetic force and a magnetic field? 4. What causes magnetism? 5. Why are some iron objects magnetic and others not magnetic? 6. Name //three// actions that can cause a magnet to lose its magnetic properties. 7. When a magnet is cut into two pieces, is either piece still magnetized? //Explain//. 8. If Earth’s inner core is not the cause of Earth’s magnetic field, then what is the cause? 9. What would show the shape of the field that is formed by spinning electric charges?

TEST: Electricity Chapter Sections 1 - 4 (the entire thing ... the last quiz was over the first two sections)
Study the reading, section and chapter reviews (questions may be pulled directly from them) and be able to explain the objectives, vocabulary and concepts. The Chapter and section reviews are also a good indication of material on the test. LOOK below for a study guide to sections 1 & 2

Section 3: ohm's law, calculate resistance, voltage, and current, understand the relationship of the three factors in Ohm's law, electric power, watt, calculate electric power, electric energy and calculating it, saving energy,

Section 4: parts of a circuit, compare series and parallel circuits and their uses, how fuses and breakers work.

Additional websites to visit
[|Circuit Games] [|TESTER]

Study the reading for sections 1 and 2, the directed reading homework for both sections, the section reviews for both sections, know all the vocabulary.
==electric charge, charges, law of electric charges, electric force, electric field, friction, conduction, induction, conservation of charge, how to detect charges, how charges move, conductors, insulators, static electricity, electric discharge, what happens in lighting, electric current, voltage, resistance, how current flows, AC and DC current, voltage, what are they measured in?, what resistance depends on?, how to generate electric current, wet and dry cells and their parts, thermocouples, photocells==

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II Background knowledge:(10 points) Discuss any previous experiments or work that might help you make a good hypothesis, what is a conductor, an insulator, a circuit, draw a circuit, what happens in an electric current? What makes a good conductor (remember from the Chemistry unit?) Answer all these questions here because they should help you make good predictions for your hypothesis.=====

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2. restate procedures and analysis (use a narrative form, more friendly), For the procedure you can tell me about your lab partners, who did what, and general information. For the analysis talk about the results from the tests (look at your analysis and restate it)=====

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3. restate hypothesis and whether your hypothesis was supported or not from teh analysis. (remember the questions in part I). Use these terms "helps support my hypothesis that _" If your data does not support it the hypothesis state that too.=====

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4. Talk about the errors that might have affected the results. We talked about at least five in class, spend a moment thinking about other things that might have affected the results. (3 for satisfactory)=====

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6. What does this have to do with the real world? Connect the small experiment with larger ideas. Conductors and Insulators. We spoke in class about this but the more in-depth you go in examples the better (3 for satisfactory)=====