Ps2

Which of the following statements gives the best evidence that gravity pulls objects toward the center of the Earth?

• The needle of a compass points only in one direction.

• Molten rocks are not found on the surface of the Earth.

• Any object dropped from a tower falls toward the ground.

• Submarines are underwater most of the time.

Adam made a paper airplane and threw it across his room. It glided through the air. Then, it fell to the ground. What force caused the paper airplane to fall?

• friction

• magnetism

• gravity

• push

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NGSS.MS-PS2-4

Which of the following is true of Earth's gravity?

• A. It only has an effect on objects farther than ten meters from the Earth's surface.

• It only has an effect on the Moon and the Sun.

• It pushes objects away from the Earth's surface without touching them.

• It pulls objects toward the Earth's surface without touching them.

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NGSS.MS-PS2-4

Which of the following statements gives the best evidence that gravity pulls objects toward the center of the Earth?

• The density of ice is greater at Earth's equator.

• Asteroids approaching the Earth from any direction get pulled toward the Earth.

• Several iron nails are pulled toward a strong magnet.

• Winds blow from the South Pole toward the Equator.

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NGSS.MS-PS2-4

The picture below shows a waterfall. Two parts of the waterfall are labeled X and Y. How does the picture support the fact that gravity pulls downward?

• The water is pulled from point Y to point X, which is closer to the center of the Earth.

• The water is pulled from point X to point Y, which is farther from the center of the Earth.

• The water is pulled from point Y to point X, which is farther from the center of the Earth.

• The water is pulled from point X to point Y, which is closer to the center of the Earth.

Tags

NGSS.5-PS2-1

A ball is thrown in the air. The ball goes up, then changes direction and falls down. Why does the ball fall down?

• Gravity pushes the Earth up.

• Gravity makes the ball lighter.

• Gravity stops working.

• Gravity pulls it down

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NGSS.5-PS2-1

Which of these objects will fall toward the Earth if they are all thrown into the air?

• a parachute toy

• a pencil

• a bouncy ball

• all of these

Tags

NGSS.MS-PS2-4

It is easier to ride a bicycle down a hill than to ride up a hill because _______ helps the bicycle move down the hill

• gravity

• friction

• rotation

• magnetism

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The picture above shows a meteor. A meteor is a small body of matter that is pulled by Earth's gravity from space into Earth's atmosphere. Sometimes, the meteor burns up in the atmosphere. When it does not, the meteor hits the Earth's surface as a meteorite. When it hits the surface of the ocean, it sinks deeper into the water. What does the movement of a meteor or meteorite show about Earth's gravity?

• Earth's gravity does not affect objects until they hit the Earth.

• Earth's gravity does not affect objects in water.

• Earth's gravity is directed down to the center of the Earth.

• Earth's gravity only affects objects in Earth's atmosphere.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The picture above shows a sinkhole. A sinkhole is a hole in the ground that occurs when the surface layer of the Earth collapses. What does the formation of a sinkhole show about Earth's gravity?

• Earth's gravity pushes soil away from the center of the Earth.

• Earth's gravity pulls only from the surface of the Earth.

• Earth's gravity does not affect the surface of the Earth.

• Earth's gravity pulls from the center of the Earth.

Tags

NGSS.MS-ESS2-2

NGSS.MS-PS2-4