Unit 2 Gravity and Orbits Review

What is gravity?

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What are the 3 parts to Newton’s Law of Universal Gravitation?

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If a body in space becomes more massive, what will happen to the gravitational pull it exerts on other objects?

• It will increase

• It will decrease

• It will stay the same

• It will disappear

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The force of gravity is measured using what units?

What is mass?

What is weight?

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How is mass different than weight?

Which has a higher gravitational pull: Earth or the moon? Why?

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What formula is used to find weight?

• Weight = mass × gravity

• Weight = mass + volume

• Weight = density × volume

• Weight = energy ÷ time

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What is the acceleration due to gravity on Earth?

• 9.8 m/s²

• 8.9 m/s²

• 10.5 m/s²

• 7.8 m/s²