Test - Unit 8 Electricity And Magnetism

Question 1

4. In a closed containing one resistor and a battery, if the voltage in the battery increases the current going through the resistor increases. Why does this occur?

Answer 1

As the electrons are pushed more by the battery, they move faster through the circuit.
Unit 8 Concept 3 pg 1

Question 2

6. Electric charges always flow from ______ areas to _____ areas.

Answer 2

negative, positive

Unit 8 Concept 1 pg 1

Question 3

8. Circuit _____ represents the way homes are usually wired.

Answer 3

Parallel

Unit 8 concept 3 pg 1

Question 4

9. This exerts a force that causes other electric charges to move.

Answer 4

electrical fields

Unit 8 Concept 1 pg 1

Question 5

11. Providing a path that allows electric charges to travel directly into the Earth rather than traveling through a building.

Answer 5

Grounding

Unit 8 concept 4 pg 2

Question 6

12. Which of the following statements about electric charge is true?

Answer 6

Electrical forces act at a distance.

Unit 8 Concept 4 pg 1

Question 7

13. Circuit_____ is the type of circuit that causes an entire string of lights to go out when one of the bulbs burns out.

Answer 7

Series

Unit 8 concept 3 pg 1

Question 8

16. A device that measures the voltage difference in a circuit.

Answer 8

Voltmeter

Unit 8 concept 4 pg 2

Question 9

21. When non-magnetic materials become attracted to magnets

Answer 9

Ferromagnetism

Unit 8 concept 4 pg 2

Question 10

23. Temporary magnet made by placing a piece of iron inside a current carrying coil of wire.

Answer 10

Electromagnets

Unit 8 concept 4 pg 3

Question 11

24. The function of a generator is to change _______.

Answer 11

mechanical energy to electrical energy

Unit 8 concept 1 pg 2

Question 12

29. Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?

Answer 12

plastic plate

Unit 8 concept 1 pg 3

Question 13

30. What does the symbol labeled #1 represent?

Answer 13

light

Unit 8 concept 2 pg 1

Question 14

32. Circuit _____ is wired in parallel, and circuit ______ is wired in series.

Answer 14

Parallel, series

Unit 8 concept 3 pg 1

Question 15

34. What process is the method by which a neutral object obtains an electrical charge from a distance?

Answer 15

Induction

Unit 8 concept 3 pg 2

Question 16

35. Laser printers work with the use of heat and positive and negative charges. The laser etches a negative charge on spots of the printer drum in the form of text or images. The plastic ink dust is attracted to the places on the drum with this negative charge. What is the charge of the plastic ink dots themselves?

Answer 16

Positive

Unit 8 concept 2 pg 2