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ch.17 electricity vi

QuestionAnswer
1. Law of electric charge states that like charges repel and opposites attract
2. Law of electric charge drawing
3. Electric Force forces between charged objects
4. Electric field region around a charged particle that can exert a force
5. 3 ways to “Charge It” p. 424 friction conduction and induction
6. Drawings for each of the 3 types
7. Conservation of Charge when you charge objects by any method, no changes are created nor destroyed
8. How can a charge be detected? Electroscope
9. Drawing of # 7
10. Conductors a material in which particles can move more easily
11. Examples of conductors copper, silver, aluminum, and mercury
12. Insulators material in which charges cannot move easily
13. Examples of insulators plastic, rubber, glass and wood
14. Static Electricity build of electric charges on an object
15. Electrical discharge loss of static electricity as charge moves off an object
16. Lightning most dramatic form of electric discharge
17. Lightning diagram p. 428
18. Lightning Rod pointed rod connected to the ground by a wire
19. Grounded when earth absorbs an electric charge causing no damage
20. Dangerous places when it is lightning include……. under trees, open areas, and under water
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21. Cell devise the product of electric current by converting energy to electrical energy
22. Battery converts chemical energy to electrical energy
23. Parts of a battery – electrolyte & electrode electrolyte-mixture of chemicals that contains a current. Electrode-part where charge enters or exits.
24. Types of Battery Cells wet cells and dry cells
25. What is the relationship between potential difference & volts potential difference is express in volts
26. Photocells & examples part o a solar panel that converts light into electrical energy
27. Thermocouple creates thermal energy
28. Drawing of thermocouple
Section 3 & 4
29. Electrical current p. 433 more precisely defined as the rate at which a charge passes through a given point
30. Two types of electrical current direct current and alternating current
31. Direct Current & diagram
32. Alternating Current & diagram
33. Voltage difference in energy per unit charge as change moves between the 2 points
34. Resistance opposition to the flow of electrical charge
35. What is the relationship between resistance & current resistance opposes current like friction to motion
36. How thickness, length & temperature effect electrical current the resistance varies for each for thickness, length, and temperature
37. What is Ohm’s Law? determines the relationship between current, voltage, and resistance can be expressed by an equation
38. Electrical Power Formula volts(v) and ohms (horseshoe)
39. Watt unit for power
40. How is household energy measured by the energy company whol is household energy measured by the energy company by multiplying the power in kilowatts by the time and hours
Created by: vincent1111
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