Electromagnetism Introduction

What does attract mean?

• to pull apart
• to jump
• to come together
• to shop

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

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

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Which object would a magnet attract?

• a glass bottle
• a piece of paper
• a metal paper clip
• a rubber eraser

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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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What are the north and south ends of a magnet  called?

• borders
• tips
• caps
• poles

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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Which of the following is true of a bar magnet?

• Its magnetic field is strongest near its center.
• It is surrounded by a magnetic field.
• The north pole is stronger than the south pole.
• The south pole is stronger than the north pole.

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

• granite
• limestone
• iron
• nickel

If I were to try to connect the North pole of one magnet to the North pole of another magnet, the two poles would:

• attract
• repel
• neither

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In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

• wire, iron, electric
• electric, wire, iron
• iron, electric, wire