Forces and Motion

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

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A _____ moves an object closer to you.

• push
• pull
• friction
• cat

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How are a push and a pull alike?

• You can hear them both.
• They are both names of cats.
• You can do them both at the same time.
• They are both forces.

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What force moves an object away from you?

• pull
• push
• gravity
• Jedi force

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Another way that force can cause the change in an object's motion is to...

• change its color.
• change its pitch.
• change its direction.
• change its spots.

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Why is there less friction between two ice cubes touching than between sandpaper on wood?

• They have rough surfaces.
• They have loud surfaces.
• They have smooth surfaces.
• They have bright surfaces.

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What is one way to reduce friction?

• Put sandpaper between the surfaces that touch.
• Push the surfaces closer together.
• Shine a light on the surfaces.
• Put a slippery substance between the surfaces.

How does friction help us move from place to place?

• Friction does not help us.
• Friction keeps us from slipping and sliding.
• Friction only helps cats.
• Friction makes us slip and fall.

What keeps the Moon in orbit around Earth?

• Earth's rotation.
• Earth's atmosphere.
• Earth's gravity.
• Earth's shape.

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Which would require the most force to move?

• a toy car
• a sleeping cat
• a science book
• a chair with a friend sitting in it

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