The Force of Magnetism

Why does the Earth have a strong magnetic field?

• It rotates on its axis and has a core made of iron and nickle.

• Our planet is mostly water.

• Its core is a temporary magnet.

• The Sun's gravity makes it electrically charged.

What is the relationship between distance and magnetic fields?

• The further the distance the stronger the field.

• Distance has no effect on the magnetic field.

• The further the distance the less effect a magnetic field has on an object.

• Distance is the same strength as the field.

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What happens to the magnetic field when you put four magnets together?

• It becomes one big magnetic field.
• The field is not four times as strong.
• The strength does not change.
• They repel each other.

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An object that sticks to iron, cobalt, or nickel is called ...

• Permanent magnet
• Temporary magnet
• Unilateral magnet
• Ferrite

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An attractive force between objects, like between Earth and objects on Earth.

• Magnetic force
• Invisible force
• Force Awakens
• Gravitational force

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What question was this student testing?

• How many washers can you pick up with a magnet?
• What is the average number of washers picked up by a magnet?
• The amount of magnets affects the number of washers picked up.
• How many trials are needed to pick up the most washers?

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What is this an image of?

• A battery
• Polar vortex
• Magnetic fields
• Gravitational fields

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Magnets have a north or south pole but not both. True or False

• True
• False

A ball a the top of a hill is called ...

• Potential energy
• Temporary energy
• Kinetic energy
• Frictional energy

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When a magnet causes a paper clip to move, it’s an example of ______________ energy turning into ___________ energy.

• Potential energy turning into kinetic energy.
• Kinetic energy turning into potential energy.
• Gravitational energy turning into frictional energy
• Frictional energy turning into gravitational energy.

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