Magnetism Quiz

If you cut a permanent magnet into four pieces, you will have _____ (Mark the one best answer.)

• A four temporary magnets

• B four smaller permanent magnets

• C two north poles and two south poles

• D four objects that are no longer magnets

A paperclip moves toward a magnet when the two objects are about 2cm apart. Is this evidence that a magnet has an invisible force?

• Yes

• No

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Sometimes you cannot push two magnets together to make them touch. Is this evidence that a magnet has an invisible force?

• Yes

• No

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_ A magnet is placed on an aluminum pan; when you hold the magnet only, the pan falls to the floor. Is this evidence that a magnet has an invisible force?

• Yes

• No

Tags

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Iron filings on a plate move into a distinct pattern when gently shaken above a magnet. Is this evidence that a magnet has an invisible force?

• Yes

• No

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Fill in each blank with the correct term: potential or kinetic. When a magnet causes a paper clip to move, it’s an example of _____ energy being changed into _____ energy.

• potential, kinetic

• kinetic, potential

• thermal, kinetic

• potential, thermal

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Fill in each blank with the correct term: potential or kinetic. A child running is an example of _____ energy.

• kinetic

• potential

• thermal

• chemical

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Fill in each blank with the correct term: potential or kinetic. A motionless iron object in the magnetic field of a magnet may be said to have _____ energy.

• potential

• kinetic

• thermal

• chemical

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People often stick notes and other objects to refrigerator doors, using magnets. A student tried to do this, but the object he wanted to stick to the refrigerator fell to the floor.

What could the reasons be?

• The refrigerator door is made of steel (that contains iron).

• The refrigerator door is made of aluminum (not a magnetic material).

• The object is too thick.

• The magnet is too weak.

• The object is too light.

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Two magnets can attract or repel.

• True

• False

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