NGSS.MS-PS2-4

The gravitational pull is greater between two objects that

• have greater masses.
• have rougher surfaces.
• are farther apart.
• are moving at greater speed

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NGSS.MS-PS2-4

Any object with mass has gravity.

• True
• Sometimes
• False
• Never

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NGSS.MS-PS2-4

A person would weigh less on on the Moon than on the Earth because . . .

• Moon has more mass, and therefore more gravity
• Moon has less mass, and therefore more gravity
• Moon has more mass, and therefore less gravity
• Moon has less mass and therefore less gravity

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NGSS.MS-PS2-4

Why does the moon's gravitational pull have more of effect on tides than the sun's gravitational pull?

• they are the same
• the moon is larger than the sun
• tides are not caused by the moon
• the moon is closer to the Earth than the sun

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NGSS.MS-PS2-4

A force of attraction between any two objects is called _____________.

• static electricity 
• rotation
• gravity
• orbit

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NGSS.MS-PS2-4

If Earth were much smaller, it would not support life because it would not have enough mass to

• collect needed radiant energy from the Sun.
  
• maintain a gravitational pull on the Moon.
• have sufficient gravity to hold an atmosphere.
  
• rotate on its axis once per day.

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NGSS.MS-PS2-4

As mass increases, what happens to the gravitational force?

• It increases.
• It decreases.
• It stays the same.
• It acts as a 3rd degree derivative function.

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NGSS.MS-PS2-4

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

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NGSS.MS-PS2-4

Which has more mass, Earth or the Moon?

• Earth
• Moon
• The same

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NGSS.MS-PS2-4

What is gravity?

• A force
• Energy
• A push
• All of them

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NGSS.MS-PS2-4