FRICTION AND GRAVITY

Friction force ____________.

• does not move

• opposes motion

• goes in the direction of motion

Tags

NGSS.MS-PS2-2

Moving away from the earth ____________ gravity.

• increases

• decreases

• does not change

Soap and water ____________ friction between hands.

• increases

• decreases

• does not change

Gravity ____________ as mass decreases.

• increases

• decreases

• does not change

Tags

NGSS.MS-PS2-4

The force of gravity on earth is ____________ the moon's.

• less than

• greater than

• equal to

Tags

NGSS.MS-PS2-4

What would happen if there was no gravity?

• Everything would float.

• Everything would be the same.

• Everything would sink.

Why does a ball fall to the ground?

• Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground.

• Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground.

• Earth's force of gravity is EQUAL to the ball's, so the ball gets attracted to the ground.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What does friction produce?

• heat

• sound

• gravity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

The Sun has the greatest pull of gravity. This is why Earth does not float away in space.

• TRUE

• FALSE

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

If you kick a soccer ball, it goes up to a certain distance and stops. This happens due to ____________.

• gravity

• weight

• friction

Tags

NGSS.MS-PS2-2