Why do planets revolve around the sun, according to the video?

The sun has a much larger mass than the planets, resulting in a greater gravitational force that pulls or attracts the planets towards it.

Calculating Gravitational Force

9th Grade•80 minutes

I can describe and calculate the gravitational force between two objects using Newton's Law of Universal Gravitation.

Gravity is a force that attracts objects toward each other, keeping planets in orbit around the sun.

The strength of gravity depends on an object's mass; the greater the mass, the greater the gravitational force.

Two scientists who made important discoveries about gravity are Sir Isaac Newton and Albert Einstein.

This lesson includes 12 practice questions to reinforce learning.

View questions preview

1. According to the video, what two factors determine the size or pull of gravity?

2. Explain the difference between mass and weight as described in the video.

3. True or False: According to the video, you do not exert a gravitational force on the objects around you.

...and 9 more questions

Gravity for Kids | Learn all about how gravitational force works

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