U2: Gravity & Inertia Quiz

What is a force?

• A push or pull

• A type of energy

• A kind of matter

• A chemical reaction

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Who developed the Universal Law of Gravitation?

• Sir Isaac Newton

• Albert Einstein

• Galileo Galilei

• Nikola Tesla

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Gravity depends on which two factors?

• Mass and distance

• Speed and direction

• Temperature and volume

• Color and shape

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What is the tendency of an object in motion to resist change called?

• Inertia

• Gravity

• Friction

• Magnetism

What does Newton’s first law of motion state about an object at rest?

• It will stay at rest unless acted upon by a force

• It will move in a circle

• It will gain mass

• It will lose energy

What causes the moon to travel in a straight line?

• Inertia

• Gravity

• Friction

• Magnetism

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What keeps objects in space orbiting around other objects?

• Gravity and inertia working together

• Only gravity

• Only inertia

• Friction and magnetism

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What is the path called that results from the tug of war between gravity and inertia?

• Curved orbital path

• Straight line

• Square path

• Random path

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What happens to the gravitational force if the distance between two objects increases?

• It becomes less

• It becomes more

• It stays the same

• It disappears completely

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An object​ at rest will stay​ (a)   , an object​ (b)   will stay​ in motion at the same constant speed and direction--unless acted upon by an outside​ (c)  

• in motion
• at rest
• in space
• force
• orbiting
• at a standstill
• under pressure