Week 26 Gravity Study Guide

The scientist who first studied gravity is:

• Albert Einstein

• Galileo Galilei

• Isaac Newton

• Niels Bohr

Put these animals in order of least to most mass:

• mouse, puppy, tiger, hippo

• puppy, mouse, tiger, hippo

• hippo, tiger, puppy, mouse

• tiger, mouse, puppy, hippo

Gravity is a (a)   force. (Choose one.)

• Pulling
• Repulsive

• Neutral

• Pushing

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Gravity’s force causes objects to (a)   (Choose one)

• move toward
• float
• move down
• rise

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Which object would have the greatest gravitational pull?

• Baseball

• Ping pong ball

• Football

• Bowling ball

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The force that holds our solar system together is:

• Electromagnetic force

• Nuclear force

• Gravitational force

• Frictional force

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To launch a rocket into space, we need to overcome gravity by:

• Increasing the rocket's speed to reach escape velocity

• Decreasing the rocket's weight

• Using parachutes

• Flying at a lower altitude

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The moon has less gravity than Earth because:

• it is larger in size.

• it is closer to the sun.

• it has less mass.

• it has more atmosphere.

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Mass affects an object’s gravitational pull by:

• Increasing the gravitational pull as mass increases

• Decreasing the gravitational pull as mass increases

• Having no effect on the gravitational pull

• Reversing the gravitational pull direction

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The sun affects planets by:

• Pulling them towards it

• Causing them to rotate

• Making them invisible

• Changing their color