Calday Magnetism

A magnet will pick up a nail, but not a penny because the nail

• has rust on it.
• is lighter than the penny.
• has a sharp point.
• contains iron.

Which of these is attracted to a magnet?

• iron nail
• copper penny
• piece of paper
• notebook

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Which is NOT a use of magnets?

• Generating electricity
• Holding cabinet doors closed
• Sorting paper from plastic
• Storing information on computer hard drives.

_{^{The magnet's shown will}}

• not move
• attract
• repel
• all of the above

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_{^{The magnet's shown will}}

• not move
• attract
• repel
• all of the above

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Amy used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?

• The magnet needs glue
• The magnet couldn't hold due to the thickness of the paper
• Paper repels magnets
• A magnet isn't attracted to the refrigerator.

All magnets have 2

• fields
• colors
• poles
• all of the above

The two poles on a magnet are

• north and east
• north and west
• south and north
• south and west

Earth acts like a giant magnet because its center is made up MOSTLY of

• granite
• limestone
• iron
• nickel

Where is the strongest attraction force of the magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

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