What is gravity best described as?

• A force that only acts on large objects

• A force of repulsion between objects

• A force that only acts on small objects

• A force of attraction between objects

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What two factors determine the size of the gravitational force between two objects?

• The distance apart and the shape of the objects

• The mass of the objects and their volume

• The volume of the objects and their distance apart

• The mass of the objects and their distance apart

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NGSS.MS-PS2-4

What is the gravitational field strength on Earth?

• 10.8 newtons per kilo

• 9.8 newtons per kilo

• 1.6 newtons per kilo

• 8.9 newtons per kilo

How do we calculate an object's weight in a gravitational field?

• Mass minus gravitational field strength

• Mass times gravitational field strength

• Mass plus gravitational field strength

• Mass divided by gravitational field strength

What is the weight of a person with a mass of 60 kilos on Earth's surface?

• 600 newtons

• 588 newtons

• 9.8 newtons

• 60 newtons

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NGSS.MS-PS2-4

In everyday language, how do we usually refer to our mass?

• In newtons

• In grams

• In joules

• In kilos

What is the formula for gravitational potential energy?

• ep = mg/h

• ep = m/g*h

• ep = mgh

• ep = mh/g

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What units are used to measure gravitational potential energy?

• Meters

• Kilos

• Joules

• Newtons

If an apple with a mass of 100 grams is thrown 3 meters up in the air, what is its gravitational potential energy?

• 4.94 joules

• 1.94 joules

• 2.94 joules

• 3.94 joules

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NGSS.MS-PS3-2

What are the key takeaways about gravity from this video?

• Gravity is a force of repulsion, weight is mass minus gravitational field strength, and potential energy is measured in meters.

• Gravity is a force of attraction, weight is mass plus gravitational field strength, and potential energy is measured in kilos.

• Gravity is a force of attraction, weight is mass times gravitational field strength, and potential energy is measured in joules.

• Gravity is a force of repulsion, weight is mass divided by gravitational field strength, and potential energy is measured in newtons.

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NGSS.MS-PS2-2

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