6.11

Gravity can be defined as the –

• force of attraction between two or more masses.

• friction created when two objects are in contact.

• energy given off by stars due to nuclear reactions.

• path an object follows as it moves through space.

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Planets in our solar system orbit the Sun because it –

• has the greatest magnetic field.

• is the celestial body with the greatest mass

• is the brightest object in our solar system.

• formed millions of years before the planets.

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NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The gravitational pull of the Sun affects which of the following properties of the planets in our solar system?

• Chemical composition

• Speed and shape of orbit

• Formation of land features

• Number of moons

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Why do planets orbit the Sun?

• The Sun is the only celestial object that has a gravitational pull

• The Sun’s chemical composition makes it attract planets

• Only celestial bodies that emit light, like the Sun, can be at the center of an orbit

• The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

List the steps of the scientific method

d

e

f

c

b

a

Conduct experiment

Ask a question

Communicate results

Analyze results

Draw conclusions

Form a hypothesis

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NGSS.MS-ETS1-3

NGSS.MS-LS1-5

If the distance between Mercury and the Sun were increased, what could be done to maintain the same gravitational force of attraction between Mercury and the Sun?

• Decrease the masses of Mercury and the Sun

• Decrease Mercury’s speed of orbit around the Sun

• Increase the masses of Mercury and the Sun

• Increase Mercury’s speed of orbit around the Sun

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following would have the smallest gravitational attraction between the two masses?

• A

• B

• C

• D

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Look at the table provided. In which example is the gravitational force of attraction between the two objects the greatest?

• Example 1

• Example 2

• Example 3

• Example 4

Tags

NGSS.MS-PS2-4

Which of the following governs the motion of our solar system?

• Magnetism

• Gravity

• Sunlight

• Friction

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which two factors affect the strength of the gravitational pull on two objects?

• Mass and density

• Weight and density

• Weight and distance

• Mass and distance

Tags

NGSS.MS-PS2-4