Magnetic Fields Unit Review

What happens to the potential energy in the system, when the magnetic train is moved away from the stationary magnet?

• The potential energy increases because the magnet is moved against the magnet force.

• The potential energy decreases because the magnet is moved against the magnet force.

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NGSS.MS-PS2-3

NGSS.MS-PS3-2

Which movement will result in the greatest potential energy increase?

• Moving Car 1 one space toward the center magnet.

• Moving Car 2 one space away from the center magnet.

• Moving Car 2 one space toward the center magnet.

• All movements will result in the same change in potential energy.

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NGSS.MS-PS2-4

NGSS.MS-PS3-5

What happens to the energy in a system of magnets when the magnetic force causes two magnets to move?

• The potential energy in the system increases.

• The kinetic energy in the system decreases.

• Some of the potential energy is converted to kinetic energy.

• Some of the kinetic energy changes to potential energy.

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NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Will these magnets attract or repel?

• Attract

• Repel

• Neither

• Both

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NGSS.MS-PS2-3

How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?

• The magnetic force increases the potential energy in the system.

• The magnetic force decreases the potential energy in the system.

• The magnetic force changes kinetic energy into potential energy.

• The magnetic force changes potential energy into kinetic energy.

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NGSS.MS-PS3-5

Will these magnets attract or repel?

• Attract

• Repel

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NGSS.MS-PS2-3

Will these magnets attract or repel?

• Attract

• Repel

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which electromagnet will have the stronger magnetic force?

• The electromagnet on the left

• The electromagnet on the right

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NGSS.MS-PS2-3

How does a system of magnets store potential energy in the magnetic field?

• The energy used to move a magnet with (same direction as) a magnetic force.

• The energy used to move a magnet against (opposite direction as) a magnetic force.

• Magnets get their potential energy from kinetic energy.

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NGSS.MS-PS2-5

NGSS.MS-PS3-2

The space around a magnet in which magnetic forces can act on objects.

• Magnetic Field Lines

• Energy

• Kinetic Energy

• Magnetic Field

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NGSS.MS-PS2-5