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CHAPTER OUTLINE. CHAPTER RESOURCES. CHAPTER. NEW CHAPTER. Electricity. the BIG idea. Moving electric charges transfer energy. 5.1. Materials can become electrically charged. 5.2. Charges can move from one place to another. 5.3. Electric current is a flow of charge. Electrons have a

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NEW CHAPTER

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  1. CHAPTER OUTLINE CHAPTER RESOURCES CHAPTER NEW CHAPTER Electricity theBIGidea Moving electric charges transfer energy. 5.1 Materials can become electrically charged. 5.2 Charges can move from one place to another. 5.3 Electric current is a flow of charge.

  2. Electrons have a negative charge. 5.1 Materials can become electrically charged. Electric charge is a property of matter. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  3. Protons have a positive charge. 5.1 Materials can become electrically charged. Electric charge is a property of matter. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  4. Unlike charges attract. 5.1 Materials can become electrically charged. Electric charge is a property of matter. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  5. Like charges repel. 5.1 Materials can become electrically charged. Electric charge is a property of matter. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  6. At first, a balloon and a glass rod each have balanced, neutral charges. 5.1 Materials can become electrically charged. Static charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  7. When they touch, electrons move from the rod to the balloon. 5.1 Materials can become electrically charged. Static charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  8. Afterwards, the balloon has a negative charge, and the rod has a positive charge. 5.1 Materials can become electrically charged. Static charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  9. SIMULATION Learn more about static electricity. 5.1 Materials can become electrically charged. Static charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges. electric charge electric field static charge induction CHAPTER RESOURCES SECTION OUTLINE

  10. 5.2 Charges can move from one place to another. Charge movement is affected by 1. Lightning strikes the lightning rod, because the rod is the path of least resistance. electric potential volt • electric potential, measured in volts conductor • resistance, measured in ohms insulator resistance A conductor has low resistance. ohm 2. The rod conducts the charge to a conductor cable, which has low resistance. grounding An insulator has high resistance. A ground is the path of least resistance. 3. The ground wire conducts the charge into the ground, where it spreads out and becomes harmless. CHAPTER RESOURCES SECTION OUTLINE

  11. Voltage Current = Resistance V I = R 5.3 Electric current is a flow of charge. Electric current is measured in amperes, or amps. electric current ampere Ohm's law states that current equals voltage divided by resistance. Ohm’s law electric cell Electrochemical cells produce electric current through chemical reactions. CHAPTER RESOURCES SECTION OUTLINE

  12. Voltage Current = Resistance V I = R SIMULATION See Ohm’s law in action. 5.3 Electric current is a flow of charge. Electric current is measured in amperes, or amps. electric current ampere Ohm's law states that current equals voltage divided by resistance. Ohm’s law electric cell Electrochemical cells produce electric current through chemical reactions. CHAPTER RESOURCES SECTION OUTLINE

  13. 5.1 Materials can become electrically charged. I. Materials can become electrically charged. electric charge • A. Electric charge is a property of matter. electric field • B. Static charges are caused by the movement of electrons. static charge induction • 1. Charging by Contact • 2. How Materials Affect Static Charging • 3. Charging by Induction • 4. Charge Polarization • C. Technology uses static electricity. CHAPTER RESOURCES KEY CONCEPT SUMMARY

  14. 5.2 Charges can move from one place to another. II. Charges can move from one place to another. electric potential • A. Static charges have potential energy. volt • 1. Electric Potential Energy conductor • 2. Electric Potential insulator • 3. Charge Movement resistance • 4. Lightning ohm • B. Materials affect charge movement. grounding • 1. Conductors and Insulators • 2. Resistance • 3. Superconductors CHAPTER RESOURCES • 4. Grounding KEY CONCEPT SUMMARY

  15. 5.3 Electric current is a flow of charge. III. Electric current is a flow of charge. electric current • A. Electric charge can flow continuously. ampere • 1. Current, Voltage, and Resistance Ohm’s law • 2. Ohm’s Law electric cell • 3. Measuring Electricity • B. Electric cells supply electric current. • 1. Electrochemical Cells • 2. Solar Cells CHAPTER RESOURCES KEY CONCEPT SUMMARY

  16. CLASSZONE.COM CHAPTER HOME Image Gallery Click here to view chapter images and animations Chapter Resources Click on the items below to access resources on Content Review Review key concepts and vocabulary Resource Centers Get more information on select science topics Math Tutorial Review math concepts Standardized Test Practice Practice state standardized tests BACK TO CHAPTER

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