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Universal Forces

Authored by Lisa Thompson

Science

8th Grade

NGSS covered

Universal Forces
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15 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Select the answers that correctly describe magnets or magnetic forces.

Magnetic forces act on certain metals

Magnets have two poles, north and south

Two poles that are alike attract each other

Magnetic forces can both attract and repel

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The force that holds particles in the nucleus together is the ___________________

strong nuclear force

weak nuclear force

gravitational force

electromagnetic force

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Select the best answer. Over extremely short distances, approximately how many times stronger is the strong nuclear force than the electric force of repulsion?

10

100

1000

10000

Tags

NGSS.HS-PS2-4

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Select the answer(s) that are true about gravitational force.

The closer two objects are to one another, the weaker the gravitational force.

The farther apart two objects are, the weaker the gravitational force.

The greater the mass of an object, the stronger its gravitational force.

Earth's gravitational force is stronger than the gravitational force of the sun

Tags

NGSS.HS-PS2-4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Is the following sentence true or false? The gravitational pull of the moon is the primary cause of Earth's ocean tides.

true

false

Tags

NGSS.HS-PS2-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The sun's mass is much greater than the mass of Earth, so the sun's gravitational force is much _____________________ than that of Earth.

stronger

better

weaker

heavier

Tags

NGSS.HS-PS2-4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The apple falls from the tree due to the effect of ……..

Earth's gravitational force

electromagnetic force

weak nuclear force

strong nuclear force

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-1

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