Gravity

What is gravity?

• The force that makes things spin

• The force that makes things float in space

• The force that pushes everything away from the ground

• The force that pulls everything toward the ground

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Who was the first person to study gravity?

• Nikola Tesla

• Isaac Newton

• Albert Einstein

• Galileo Galilei

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What happens to objects when they get closer to the Moon?

• They float away into space

• They get pulled toward the Moon

• They stay in the same place

• They get pulled toward the Earth

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What is the effect of air resistance on falling objects?

• It makes objects fall faster

• It makes objects fall slower

• It has no effect on falling objects

• It makes objects float in the air

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What did the experiment with the feather and hammer on the Moon show?

• Feathers and hammers don't fall on the Moon

• Hammers fall faster than feathers on the Moon

• Feathers and hammers fall at the same rate on the Moon

• Feathers fall faster than hammers on the Moon

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NGSS.MS-PS2-2

What is the force that keeps objects from flying off the surface of the Earth?

• Friction

• Magnetism

• Gravity

• Inertia

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What is the effect of distance on the pull of gravity between objects?

• The farther objects are, the weaker the pull of gravity

• The closer objects are, the stronger the pull of gravity

• The farther objects are, the stronger the pull of gravity

• The closer objects are, the weaker the pull of gravity

The gravitational attraction between two objects would increase if both masses are –

• increased, and the distance between them is increased.

• increased, and the distance between them is decreased.

• decreased, and the distance between them is decreased.

• decreased, and the distance between them is increased.

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NGSS.MS-PS2-4

Why do planets orbit the Sun?

• The Sun is the only celestial object that has a gravitational pull.

• The Sun’s chemical composition makes it attract planets.

• Only celestial bodies that emit light, like the Sun, can be at the center of an orbit.

• The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.

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As distance between two objects increases, the pull of gravity 

• increases.

• decreases.

• stays the same.

• has no effect.

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