Final review Unit 7 & 8

Everything with a mass has gravity and is pulled by gravity

• True

• False

Tags

NGSS.HS-PS2-4

What happens to the gravity when mass is decreased?

• Gravity increases

• Gravity decreases

• Gravity stays the same

Answer explanation

Law of gravitation tells us that more mass is more gravity

(and less mass is less gravity)

Tags

NGSS.MS-PS2-4

• Gravity would increase

• Gravity would decrease

Answer explanation

Inverse square law tell us that distance and gravity are inversely proportional (the more distance the less gravity)

• Force is 5 times greater

• Force is 6 times greater

• Force is decreased 5 times

• Force is decreased 6 times

Answer explanation

Inverse square law says if mass goes up force goes up. However much you multiply the masses is how much you multiply the force

Tags

NGSS.MS-PS2-4

Answer explanation

G = gravitational constant

It will always be the same no matter the question

Tags

NGSS.MS-PS2-4

Tags

NGSS.HS-PS2-4

• 57000

• 28500

Answer explanation

Remember to use G and to square d. The picture shows how it should look when plugged into desmos.

Tags

NGSS.MS-PS2-4

The green ball in the picture being spun around in a circle. If the string holding it were to be cut, which arrow shows the way the ball would go?

• A

• B

• C

• It would keep traveling in a circle

Answer explanation

Before the string is cut the ball was going up so its velocity would keep going upwards immediately after it was cut

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2