Law of Universal Gravitation

What does the Law of Universal Gravitation state?

• Objects in space repel each other.

• Every object in the universe attracts every other object, affected by mass and distance.

• Gravity only affects objects on Earth.

• Only planets can attract each other.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

What force causes objects with mass to attract one another?

• Magnetic force

• Nuclear force

• Electrical force

• Gravity

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

What formed from a cloud of dust, gas, and ice collapsing?

• A galaxy

• A black hole

• A comet

• A nebula, which ultimately formed our Sun and planets

What does inertia refer to?

• The decrease in gravity's pull with increased distance

• The process of a nebula forming into a solar system

• The tendency of a physical object to remain still or continue moving unless force is applied

• The force of attraction between all masses

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How does the distance of a planet from the Sun affect the Sun's gravitational pull on it?

• Distance does not affect gravitational pull

• The closer a planet is to the Sun, the weaker the pull

• The closer a planet is to the Sun, the stronger the pull

• Gravitational pull is the same at any distance

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NGSS.MS-ESS1-2

A force of attraction between objects that is due to their masses.

• Force
• Gravity
• Gravitational Pull
• Weight

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NGSS.MS-PS2-4

Label the diagram accordingly

a

b

Weaker

Stronger

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NGSS.MS-PS2-4

Match the following

• the weaker the attraction

• The farther away the planet is from the sun, the....

• weaker the Sun’s gravitational pull

• The closer the planet is to the sun, the....

• stronger the Sun’s gravitational pull

• the smaller an object

• the stronger the attraction

• the bigger an object...

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NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Label accordingly

c

a

b

d

e

Mars

Earth

Mercury

Sun

Venus

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NGSS.MS-ESS1-2

NGSS.MS-ESS1-3