Magnetism

Where is the force of attraction the strongest on a magnet?

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

The needle of a compass always points to which direction?

• south
• east
• west
• north

A device that uses a free-moving magnetic needle to show direction is a:

• lodestone
• magnet
• compass
• magnetic field

What happens when two bar magnets repel each other?

• The poles of the magnets pull toward each other.
• The poles of the magnets push away from each other.
• The centers of the magnets pull toward each other.
• The centers o the magnets push away from each other.

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How is a permanent magnet DIFFERENT from a temporary magnet?

• A permanent magnet attracts materials made of iron.
• A permanent magnet has poles.
• A permanent magnet has a magnetic field.
• A permanent magnet keeps its magnetism for a long time.

Which type of rock is naturally magnetic?

• granite
• lodestone
• limestone
• sandstone

The space around a magnet where the force of the magnet can act is called the:

• north pole
• south pole
• magnetic poles
• attraction field

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What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

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What happens when two bar magnets attract each other?

• The poles of the magnets pull toward each other.
• The poles of the magnets push away from each other.
• The centers of the magnets pull toward each other.
• The centers of the magnets push way from each other.

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NGSS.MS-PS2-3

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

• granite
• limestone
• iron
• nickel