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Chapter 17 TermsAE

Airik Evans

QuestionAnswer
1. Law of electric charge Like Charges repel and opposite charges attract
2. Law of electric charge drawing
3. Electric Force The Force between objects
4. Electric field A region around a charged particle that can exert a force on another charged particle
5. 3 ways to “Charge It” p. 424 Friction, Conduction, Induction
6. Drawings for each of the 3 types
7. Conservation of Charge No charges are created or destroyed. Electrons move from one atom to another.
8. How can a charge be detected? Using a device called an electroscope
9. Drawing of # 7
10. Conductors¬ A material in which charges can move easily
11. Examples of conductors Copper, silver, aluminum, and mercury
12. Insulators A material in which charges cannot easily move
13. Examples of insulators Plastic, rubber, glass, wood, air
14. Static Electricity The buildup of electric charges of an object.
15. Electrical discharge The loss of static electricity as charges move off an object
16. Lightning One of the most dramatic examples of electric discharge
17. Lightning diagram. 428
18. Lightning Rods A Pointed rod connected to the ground by a wire
19. Grounded Objects that are in contact with the ground.
20. Dangerous places when it is lightning include……. Open Areas, Beach, Golf Course, Under a tree
21. Cell A Device the produces an electric current by converting chemical energy into electrical energy
22. Battery Converts chemical energy into electrical energy and is made of severl cells
23. Parts of a battery – electrolyte & electrode Electrolyte: The mixture of chemicals in a cell Electrode: Part of the cell through with charges enter and exit
24. Types of Battery Cells Wet Cells Dry Cells
25. What is the relationship between potential difference & volts Volts is how potential difference is expressed
26. Photocells & examples The part of a solar panel that converts light into electrical energy. Calculator
27. Thermocouple Converts thermal energy into electrical energy
28. Drawing of thermocouple
29. Electrical current p. 433
30. Two types of electrical current Direct Current Alternating Current
31. Direct Current & diagram Charges always flow the same direction
32. Alternating Current & diagram Charges continually swich from flowing in one direction to flowing in the reverse direction
33. Voltage The difference in energy per unit charge as a charge moves between two points in the path of a current
34. Resistance the opposition to the flow of electric charge
35. What is the relationship between resistance & current Resistance effects how well electrical currents can move
36. How thickness, length & temperature effect electrical current A short, thick, cold pipe would have the least resistance
37. What is Ohm’s Law? The relationship between current, voltage, and resistance could be shown as an equation
38. Electrical Power Formula Power = votage X Current
39. Watt The unit for power
40. How is household energy measured by the energy company Multiplying the power in kilowatts by the time in hours
41.Circuit ….. A complete, closed path through which electric charges can flow
42.Load …. A device the uses electrical energy to work
43. What do ALL loads do ? Offer some resistance to electrical currents and cuas electrical energy to change into ofther forms of energy such as light energy or kinetic energy
44. Explain the relationship that a switch plays in “opening” or “closing” a circuit. A switch can be closed to turn on electrical devices or opened to turn off electrical devices
45.Series circuit … A circuit in which all parts are connected in a single lopp
46. How many paths are in a series circuit? One
47. Draw an example of a series circuit in your notebook
48. Explain what happens if one load in the circuit is malfunctioning. The other loads do not work
Parallel circuit .... A circuit in which different loads are located on separate branches.
50. Why is this circuit important in the wiring of the lights in a building ? Parallel circuit
51. Explain what happens if one load in the circuit is malfunctioning. Charges still run through other branches to other loads still work
52. Give an example of a parallel circuit in your house. The breaker box
53. Using the last paragraph p. 444 and fig. 26, explain the causes and dangers of overloading a circuit Too many fuses put into one plug may overload it and cause them to stop working or cause a fire
54. Explain how a fuse and circuit breakers help with circuit safety in your house and automobile Fuses-When temperatures get too high the metal heats up and melts so the circuit is opened. Circuit Breakers-A switch that automatically opens the circuit if the current is too high.
Created by: PhySciLewis1
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