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What is gravity?

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

Without gravity we would________. 

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

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. 

Which has more mass, Earth or the Moon?

• Earth
• Moon
• The same

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. 

The sun is a glowing ball of _______.

• Water

• Liquids

• Gases

• Rocks

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

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