Gravity

What is gravity?

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

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Without gravity we would________. 

• Float away
• Stay in the ground
• Nothing would happen.
• I don't know

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Why a ball falls to the ground?

• Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground. 
• Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground. 

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Which has more mass, Earth or the Moon?

• Earth
• Moon
• The same

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Why can astronauts jump and float a little on the Moon?

• Because the Moon's gravity is NOT that STRONG.
• Because the Moon's gravity is VERY STRONG. 

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A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

• brick

• pencil

• both would hit at the same time

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What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

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Which statement about gravity is true?

• gravity causes objects to pull towards one another

• gravity causes objects to push away from each other

• gravity only takes place between planets

• the moon doesn't have any gravity

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NGSS.MS-ESS1-2

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In order to balance a ruler or pen on your finger you need to

• put the ruler or pen far to the left

• put the ruler or pen far to the right

• find the center of gravity so it will balance

• find the weight of the ruler or pen

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It takes more effort to jump up onto a chair than down because

• in jumping down you are working with gravity

• in jumping up you are working against gravity

• both answers are correct

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