Force and Motion Practice

What is speed?

• When two surfaces against each other

• The rate at which a moving object travels

• The force that keeps your feet on the ground.

• How much something weighs

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Which is an example of friction?

• pushing brakes to slow down a car

• Erasing a mistake on a test

• rubbing two sticks together to start a fire

• All of the above

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Why do we sometimes want to prevent friction?

• To make it easier to move an object

• To keep an object from moving

• To increase the temperature in the air

• To decrease the temperature in the air

Which of the objects listed below would be attracted to a magnet?

• nails

• paperclips

• a nickel

• all of the above

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The ________________ the force, the more movement it can produce.

• greater

• slower

• smaller

• none of the above.

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The most powerful parts of the magnet are called the _____________.

• east pole and south pole

• east pole and west pole

• north pole and south pole

• south pole and west pole

Mass is a measurement of how much ________ is in an object?

• friction

• matter

• magnetism

• motion

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Rubbing your hands together to warm them is an example of?

• friction

• magnetism

• gravity

• acceleration

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On the moon, you would be able to jump much farther than on Earth. Why?

• You would weigh more on the moon.

• The Earth's gravitational pull is much less than on the moon.

• The Moon's gravitational pull is much less than on Earth.

• There is no gravity on the moon.

Gravity is a force that helps us to?

• Stay in constant motion

• float in space

• lose weight

• keep our feet on the ground

Tags

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