Friction

It is difficult to walk on an oily floor because

• Floor gets spoiled

• There is more resistance

• Force of friction is high

• Force of friction is very less

What will happen if you added water to the slide? Choose TWO answers.

• There will be more friction

• There will be less friction

• You will go faster

• You will go slower

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The object will move faster when it moves on the ____________ surface.

• smoother

• rougher

The object will move slower when it moves on the ____________ surface.

• smoother

• rougher

Which of the following would most likely stop the motion of an airplane?

• electricity

• friction

• heat

• magnetism

Name the force.

• Fricition

• Push

• Pull

• Gravity

• Magnetism

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NGSS.3-PS2-1

NGSS.5-PS2-1

Which is the source of heat that is caused when objects rapidly rub against each other?

• chemical change

• friction

• sunlight

• weather

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NGSS.MS-PS1-4

NGSS.MS-PS3-5

How can friction be reduced?

• reduce the force acting between the 2 surfaces

• reduce the roughness of the 2 surfaces coming in contact

• use wax, grease or oil

• all of the above are ways of reducing friction

Rougher surfaces have ...

• greater friction

• less friction

• the same level of friction

How does friction affect speed?

• more friction decreases speed

• more friction increases speed

• less friction decreases speed

• less friction doesn't affect speed

Tags

NGSS.MS-PS3-1