Defining Gravity

Which type of objects are pulled toward Earth?

• only apples

• only light objects

• only heavy objects

• all objects

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Sir Isaac determined that "what goes up ___"

• isn't affected by gravity

• stays up

• must come down

• goes into orbit

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A thrown ball will go up or sideways for a little bit ___

• then keep going

• then come back

• while it's not affected by gravity

• then will fall to the ground

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When we talk about gravity, 'up' just means ___

• towards the North Pole

• away from the South Pole

• away from the Earth

• toward the Earth

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NGSS.5-PS2-1

"Gravity pulls things down to Earth", really means that gravity pulls things ___

• toward the South Pole

• toward the Earth

• away from the North Pole

• toward Antarctica

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NGSS.5-PS2-1

Gravity is the force of attraction ___

• on a light object, due to a heavier one

• on a heavy object, due to a lighter one

• between two objects of the same size

• between any two objects made of matter

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NGSS.MS-PS2-5

In the experiment, the elastic band represented ___

• the Earth

• the force of gravity

• the penguin

• the Arctic

What is the definition of gravity?

• A force that attracts objects with mass towards each other

• A force that repels objects with mass from each other

• A force that only acts on planets

• A force that only acts in space

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Which scientist is credited with the law of universal gravitation?

• Albert Einstein

• Isaac Newton

• Galileo Galilei

• Niels Bohr

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NGSS.MS-PS2-5

What is the formula for gravitational force between two masses?

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