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How can you find the north pole of a magnet if it’s not labeled?

• Use another magnet to see which end is repelled.

• Hold it up to the sunlight to see a reflection.

• Touch it to metal and see which side sticks better.

What happens to the lines of a magnetic field if the magnet gets stronger?

• They get closer together.

• They disappear.

• They spread farther apart.

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What happens to energy when you pull a magnet off a refrigerator door?

• The magnet loses all its energy.

• The energy increases as you pull the magnet away.

• The energy stays the same.

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How does Earth’s magnetic field protect us from the solar wind?

• It pushes harmful particles away from Earth.

• It keeps Earth’s air warm.

• It stops the sun from shining too brightly.

How do magnetic field lines move around a magnet?

• They make circles from the north pole to the south pole.

• They go in a straight line away from the magnet.

• They don’t move; they stay in one place.

What happens when you move two magnets farther apart?

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What does a compass needle do when you use it?

• It points toward Earth’s magnetic field.

• It points toward the sun.

• It spins in circles to find the right direction.

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What happens if you put two north poles of magnets together?

• They attract each other.

• They push away from each other.

• Nothing happens.

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What happens to the magnetic force if one magnet becomes stronger?

• The force between them gets stronger.

• The force between them stays the same.

• The force between them gets weaker.

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Which part of Earth is like a giant magnet?

• Earth’s water.

• Earth’s core.

• Earth’s clouds.