Gravity, Friction, and Pressure practice

Q. The force of gravity on an object is also known as

• mass

• weight

• friction

• pressure

As distance between two objects increase (objects get farther apart), the pull of gravity

• increases also

• decreases

• stays the same

A person weighs _____ on the Moon than they do on the Earth because the moon is less massive than the Earth.

• less

• more

• the same

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What is the SI (metric) unit used to measure force?

• pounds

• meters

• kilograms

• Newtons

Objects with more mass have ____ gravity.

• more

• less

• the same

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Two examples of non-contact forces are

• a push from a hand

• a person pulling on a rope during a game of Tug of War

• gravity pulling an object closer

• magnetism pushing two north poles of a magnet apart

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Two examples of contact forces are

• a push from a hand

• a person pulling on a rope during a game of Tug of War

• gravity pulling an object closer

• magnetism pushing two north poles of a magnet apart

Friction is a force that acts in the ___________ direction of movement.

• same

• opposite

• parallel

• west

How does friction affect speed?

• More friction slows an object down.

• More friction speeds an object up.

• Friction does not affect speed.

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Which of the following is an example of friction that is helpful?

• brakes used on a bike

• tires from a car on the road

• tread on the bottom of your shoes

• All of these are examples that are helpful.