Friction

you can walk because there is friction between your __________ and ______________

• ground and air

• feet and ground

• feet and air

• air and ground

having streamlined vehicles can reduce friction

• true

• false

What is fluid friction?

• friction is friction between two surfaces that aren't moving relatively to each other

• friction between a rolling object and the surface that it is rolling on

• friction where an object slides rubs against another surface

• friction of something going through any type of liquid or air

What is sliding friction?

• friction between two surfaces that aren't moving relatively to each other

• friction between a rolling object and the surface that it is rolling on

• friction where an object rubs against another surface

• friction of something going through any type of liquid or air

these are examples of lubricants

• oil,

• grease

• powder

• all of the above

How does friction affect speed?

• more friction decreases speed

• more friction increases speed

• less friction decreases speed

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

If you kick a ball, what stops the ball?

• the grass

• sand

• your foot

• friction

Friction is a force created by-----

• pushing

• rubbing

• gravity

What does friction cause?

• It makes things speed up.

• It makes things slow down or stop.

• It make things fall to the ground.

Tags

NGSS.MS-PS2-2

On which surface will a toy car travel the furthest?

• Carpet

• Polished Wood

• Ice

Tags

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