Unit 4 Gravity Test Review

Which of the following is true about the distance between two objects?

• Heavier objects have less gravitational pull than lighter objects.

• Longer objects have more gravitational pull than shorter objects.

• Closer objects have a stronger gravitational pull than objects farther apart.

• Further objects have more gravitational pull than closer objects.

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NGSS.MS-PS2-5

NGSS.MS-PS3-2

On Earth objects fall towards the center of the Earth as a result of

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NGSS.MS-PS2-4

True or False: If you drilled a hole through Earth and dropped a coin down the hole, it would become stationary (still) at the center of the Earth.

• True

• False

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NGSS.MS-PS2-4

A student uses a ball rolling down a hill and across a table to show that Earth's gravity pulls straight down. Is this a good experiment to show this? Why or why not?

• Yes, because any experiment invovling motion shows Earth's gravitational pull

• No, because when it rolls across or down a surface it does not show that Earth's gravity pulls straight down.

• No, because the experiment should be done in space.

• Yes, because Earth doesn't have a specific gravitational pull.

When an object is not moving relative to it's surroundings, it is at

The strenght of gravity increases as _______ increases, and decreases as ______ increases

• mass, distance

• shape, size

• length, width

• push, pull

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NGSS.MS-PS2-2

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Picture this: Two planets have the same mass, but one is the size of a basket ball, while the other is the size of a glass marble. What best would describe the gravitational pull on each planet?

• There is no gravitational pull on either planet.

• An object would react the same on both planets.

• An object would experience a greater gravitational pull on the larger planet.

• An object would experience a greater gravitational pull on the smaller planet.

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NGSS.MS-PS2-4