Chapter 21 Magnetism - Chapter Test B

The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is

• an electric force.

• a magnetic force.

• proportional to the charge of the magnet.

• proportional to the mass of the magnet.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following statements describes the interaction between magnetic poles?

• Like poles attract each other.

• Like poles repel each other, and opposite poles attract each other.

• Opposite poles repel each other.

• Like poles attract each other, and opposite poles repel each other.

How does the magnetic force exerted by a magnet change as the distance between two magnets increases?

• The magnetic force increases.

• The magnetic force stays the same.

• The magnetic force decreases.

• The magnetic force does not change with distance.

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NGSS.HS-PS3-5

What is the name of the area surrounding Earth that is influenced by Earth’s magnetic field?

• magnetosphere

• atmosphere

• magnetic domain

• magnetic declination

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NGSS.HS-PS2-5

A region that has a large number of atoms whose magnetic fields are lined up parallel to a magnet’s field is

• the magnetosphere.

• the magnetic declination.

• a magnetic domain.

• a ferromagnetic region.

A ferromagnetic material that has domains that remain aligned for a long period of time is called

• a neutral object.

• nonmagnetic.

• a permanent magnet.

• a temporary magnet.

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NGSS.HS-PS2-5

What creates a magnetic field?

• charged particles that do not move

• moving electric charges

• gravity

• an isolated magnetic pole

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NGSS.HS-PS2-5

If a current-carrying wire is in a magnetic field, in what direction will a force be exerted on the wire?

• perpendicular to the magnetic field and parallel to the current direction

• parallel to both the current direction and the magnetic field

• perpendicular to the current direction and parallel to the magnetic field

• perpendicular to both the magnetic field and the current direction

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

A coil of wire that is carrying a current and produces a magnetic field is

• a galvanometer.

• a solenoid.

• a magnetic domain.

• an electric motor.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following is the reason “soft” iron is used for the cores of electromagnets?

• It is difficult to magnetize.

• It is easily magnetized.

• It has no magnetic domains.

• It is a permanent magnet.

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NGSS.HS-PS2-5