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Electromagnetism
Test Description: SPI 0807.12.1
Instructions: Answer all questions to get your test result.
1) A student coils a copper wire around a bar magnet. Which action will cause the device to generate electricity?
A
The student connects the copper wire to a light bulb.
B
The student insulates the copper wire with plastic.
C
The student moves the bar magnet through the copper wire coils.
D
The student uses a horseshoe magnet instead of a bar magnet.
2) Which is best used with a bar magnet to produce an electric current?
A
silver pins
B
paper clips
C
metal coins
D
wire coils
3) Which is generated when a bar magnet is moved through a solenoid?
A
mechanical energy
B
thermal energy
C
gravitational field
D
electric current
4) Solenoids spinning between two magnets will produce...?
A
steams
B
chemicals
C
cold
D
electricity
5) What is the invisible force a magnet uses to attract or repel objects?
A
Push - Pull Force
B
The Force it is called
C
Magnetic Force
D
Magnetic Field
6) Where is the magnetic force the strongest in magnets?
A
Top
B
Bottom
C
Sides
D
Poles
7) When you have 2 North sides of the magnets together what will happen?
A
Repel - Push Away
B
Nothing
C
Attract - Pull Toward
D
Spin in Circles
8) When you have a North and South Poles of magnets together what will happen?
A
Attract - Pull Toward
B
Nothing
C
Repel - Push Away
D
Spin in Circles
9) What is another word for coil of wire?
A
circuit
B
spring
C
solenoid
D
slinky
10) How can you increase the production of electricity in an electromagnet?
A
Uncoil the wire completely
B
Decrease number of coils, and slow down movement of magnet between solenoid
C
Turn the switch up
D
Increase number of coils, and speed of movement of magnet between solenoid
11) What does Earth's Magnetic Domain resemble?
A
Line Magnet
B
Horseshoe magnet
C
Circle Magnet
D
Bar Magnet
12) How can you increase the strength of an Electromagnet?
A
Decrease the solenoids
B
Decrease the battery size
C
Turn the power up
D
Increase the solenoids
13) What do you put inside the solenoid of an Electromagnet?
A
Rubber nail
B
Plastic nail
C
Copper nail
D
Iron nail
14) The magnetic domain is the strongest when...
A
the lines are straight
B
the lines are close together
C
the lines are curvey
D
the lines are far apart
15) Which of the following uses a magnet to produce electricity?
A
Engine
B
Fan
C
Motor
D
Generator
*select an answer for all questions
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