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Magnetism Test Review
1. __c__ Whether a material is magnetic or not depends on which of the following?
a. The material’s weight
b. The material’s mass
c. The material’s atoms (domains)
d. The material’s density
2. __b__ As electrons move, they make…
a. Electromagnetism
b. Magnetic fields
c. Motor
d. Auroras
3. __d__ A compass needle responds to a magnetic field because the compass needle is a…
a. Transformer
b. Generator
c. Motor
d. Magnet
4. __a__ What is created when a magnet moves through a coil of wire?
a. An electric current
b. An electromagnet
c. A solenoid
d. A ferromagnet
5. __a__ What is created when a wire moves between the poles of a magnet?
a. An electric current
b. An electromagnet
c. A solenoid
d. A ferromagnet
6. __c__ What can demagnetize a magnet?
a. High altitudes
b. Low altitudes
c. High temperatures
d. Low temperatures
7. __d__ A coil of wire with an electric current in it is called a(n)…
a. Transformer
b. Electric generator
c. Electric motor
d. Solenoid
8. __b__ A coil of wire that has a soft iron core and that acts as a magnet when an electric current is in the
coil is called a(n)…
a. Ferromagnet
b. Electromagnet
c. Permanent magnet
d. Temporary magnet
9. __c__ Increasing the number of loops per meter in the coils of a solenoid is one way to…
a. Increase the wire’s electric current
b. Decrease the wire’s electric current
c. Strengthen the solenoid’s magnetic field
d. Weaken the solenoid’s magnetic field
10. __a__ Increasing the electric current in the wire is one way to…
a. Strengthen a solenoid’s magnetic field
b. Weaken a solenoid’s magnetic field
c. Make a solenoid become an electromagnet
d. Make an electromagnet become a solenoid
11. __d__ What did Faraday’s experiments with magnets and electromagnetic induction demonstrate?
a. Strong electromagnets make electric current
b. Electric current is made when the magnetic field changes
c. Strong electric current makes electromagnets
d. Magnetic fields are made when the electric field changes
12. __b__ What can you make visible by sprinkling iron filings around a magnet?
a. The areas called domains
b. The magnetic field lines
c. The magnetic forces
d. The north and south poles
13. __c__ How does a galvanometer make use of the relationship between electric current and magnetic
fields?
a. Galvanometers generate electric current
b. Galvanometers change AC to DC
c. Galvanometers use magnets to measure current
d. Galvanometers use magnets to convert current into other forms of energy
14. __a__ In the region around a magnet, in which magnetic forces act, exists the…
a. Magnetic field
b. Domain
c. Pole
d. Solenoid
15. __d__ An electric fan has an electric motor inside to change…
a. Mechanical energy into electrical energy
b. Thermal energy into electrical energy
c. Electrical energy into thermal energy
d. Electrical energy into mechanical energy
16. __c__ The marked end of a compass needle always points directly to…
a. Earth’s geographic south pole
b. Earth’s geographic north pole
c. A magnet’s south pole
d. A magnet’s north pole
17. __c__ A device that increases the voltage of an alternating current is called a(n)…
a. Electric motor
b. Galvanometer
c. Step-up transformer
d. Step-down transformer
18. __c__ What do you end up with if you cut a magnet in half?
a. One north-pole piece and one south-pole piece
b. Two unmagnetized pieces
c. Two pieces each with a north pole and a south pole
d. Two north-pole pieces
Matching: Know the definitions for – magnet, magnetic pole, magnetic force, electromagnetism, electric motor,
and electromagnetic induction