Unit 4: Magnetism/Static ElectricityQuiz

A ball is sitting in a bin. The ball does not move because the forces which act on it are ____

• balanced

• unbalanced

• heavy

• light

friction is an example of a contact force

• true

• false

This is an example of a _____

• force field

• electric field

• magnetic field

• red and grey model

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When a S (south) and N (north) end of 2 magnets face each other, the magnets________

• attract

• repel

• do nothing

• explode

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As a magnet gets farther away from another magnet, the strength of the magnetic field _____

• gets stronger (increases)

• gets weaker (decreases)

• stays the same

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static electricity is known as a

• contact force

• non-contact force

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A ball slows down on concrete because of friction. This is known as a

• contact

• non-contact force

A magnet can be made with a battery, wire, and an iron nail. This magnet was used to pick up paper clips. This magnet is using ____

• contact force

• non-contact force

• static electricity

• gravity

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Why is magnetism an example of a non-contact force?

• magnets hold materials in place

• the magnet does not have to touch something to affect its movement

• Magnetic fields can push or pull objects

• electrical fields attract and repel

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What is the effect of friction on the motion of objects?

• It speeds them up

• It slows them down

• It changes their direction

• It has no effect