Lost at Sea

The north and south poles of two magnets ______________ each other.

• a. have no reaction to
• b. move away from
• c. repel
• d. attract

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If you placed the south pole of one bar magnet near the south pole of another bar magnet, the two magnets would __________ each other.

• attract
• cancel
• repel
• discharge

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The Earth is a giant magnet.

• true
• false

Iron, Nickel and cobalt are all __________________ materials

• Shiny
• poles
• magnetic
• cold

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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.

What is a Force?

• The distance
• Mass
• A push or pull
• Give me a  failing grade 

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The unit of force is

• m/s
• m/s^2
• newton
• kg

What is the net force in this picture?

• 50 Newtons to the right
• 950 Newtons to the right
• 950 Newtons to the left
• 50 Newtons to the left

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If an object is stationary (not moving) the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!

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Which one is balanced?

• top
• bottom
• both

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