Brainpop Gravity

what is gravity?

• a type of current

• a type of force

• a type of wave

• a type of energy

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According to Sir Isaac Newton, gravity depends on two factors. What are they?

• mass and distance

• volume and density

• size and shape

• mass and volume

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NGSS.MS-PS2-4

The moon's gravity is one-sixth of Earth's gravity. If you weigh 100 Newtons on Earth, how much do you weigh on the moon?

• 1 N

• 6 N

• 16.67 N

• 60 N

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How does the sun's gravity compare to the earth's gravity?

• sun's gravity is stronger

• earth's gravity is stronger

• the gravities of the sun and earth are the same

• scientists aren't able to measure the sun's gravity

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Why is the earth's gravity stronger than the moon's gravity?

• the earth is more massive than the moon

• the moon is so far away from earth

• the moon has no mass

• the earth has a larger volume than the moon

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NGSS.MS-PS2-4

According to Newton's laws, what might happen to the aerth if its orbit moved farther away from the sun?

• sun's gravitational pull on the earth would increase

• earth's gravitational pull on the moon would increase

• the sun's gravitational pull on the earth would stay the same

• sun's gravitational pull on the earth would decrease

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What theory did Albert Einstein introduce to challenge Newton's ideas?

• theory of superlativity

• theory of gravitation

• theory of relativity

• theory of specificity

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NGSS.MS-PS2-4

According to Einstein, gravity:

• makes objects fall upward

• doesn't exist when masses are very large

• makes objects bend in space

• bends space and time

Which of these would have the strongest gravitational pull?

• a large, dense star

• a medium-sized planet (less massive than the large dense star)

• a small moon (less massive than the medium-sized planet)

• a comet (less massive than the small moon)

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What effect does the moon's gravity have on the earth?

• it keeps the earth in orbit around the sun

• it causes tides in the oceans

• it causes space and time to bend around the earth

• it has no effect on the earth

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