Non Contact Force

If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move if its tip is a north pole?

• Clockwise (to the right)

• Counter-clockwise (to the left)

• It will not move

• Need more information

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How can you increase the strength of this electromagnet?

• Get a larger nail.

• Add more loops of wire.

• decrease the loops of wire.

• Get a smaller nail.

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Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.

• The balloons will attract each other.

• The balloons will become positively (+) charged.

• The balloons will pop.

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Moving a magnet near a compass can cause the compass needle to move, even though the magnet does not touch the compass. This observation is evidence for which characteristics of magnetic fields?

• There is a north and south pole on a magnet.

• They can exert a force accross a distance.

• Magnetic fields do not exist.

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A non-contact force is between

• two objects that aren't touching

• two objects that are touching

• the ground and wheels

• you and me

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Gravity is a

• Contact Force

• Myth

• Non-contact Force

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Magnetic Force is an example of ____________ force.

• contact

• non-contact

• balanced

• unbalanced

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Which of the following is a non-contact force?

• Frictional force

• Gravitational force

• Tension force

• Normal force

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What happens when a charged rod is brought near small pieces of paper?

• The paper pieces will move away from the rod.

• The paper pieces will stick to the rod.

• The paper pieces will remain stationary.

• The paper pieces will catch fire.

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Which of the following is an example of a non-contact force in action?

• A book resting on a table

• A magnet attracting a paperclip

• A car driving on a road

• A person pushing a shopping cart

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