Mystery Science: Invisible Forces Mystery 4 Review

Which material will magnets pull on?

• aluminum

• gold

• iron

• copper

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Where do magnets come from?

• The are created in nature.

• They are manufactured in factories.

• They are made in both nature and manufactured in factories.

• None of the above

How does a magnet’s force change when you move an object closer to it?

• The force changes into a push as the object gets closer.

• The force is stronger when the object is closer.

• There is no change in force when the object gets closer.

• The force is weakened when the object is too close.

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When iron touches a magnet, it becomes a magnet too. What is this called?

• polarized

• synergized

• energized

• magnetized

Where did magnets get their name?

• They are named after the place where they were first discovered.

• They are named after a land where they were found.

• They are named after the farmer who discovered them.

• They are named after a river near where they were found.

How could you make a material such as silly putty or oil magnetic?

• You could mix iron filing into the material.

• You can't make it magnetic. Only metal objects can be magnetic.

• You can freeze the material.

• You can heat up the material.

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Do magnets push or pull if you put two of them together?

• They neither push nor pull themselves together.

• They always pull themselves together.

• They may push or pull, depending on which way they are facing.

• They always push themselves apart.

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How is a magnetic force different from the force you would put on an object?

• Magnets can only push objects where people can push or pull objects.

• Magnets can put force on an object without touching them directly.

• Magnets are not as strong as humans.

• There is no difference.

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