Citipointe, Yr 4, Science U2 - Force & Motion

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-PS2-2

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

A type of friction that happens when air pushes against a moving object, causing it to slow down.

• surface area

• air resistance

• velocity

• gravity

Which of the following is an example of friction that is harmful?

• Pencil marking on paper

• Using an eraser to erase marks

• sand placed on ice in the winter

• Engine parts wearing out

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.HS-PS3-4

The rougher the surface, the faster an object will travel over the surface.

• True
• False

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

This car is turning, but there’s a puddle of water in the road. Which diagram best shows how the puddle will affect the path of the car after it hits the puddle?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

On which surface will a toy car travel the furthest?

• Carpet
• Polished Wood
• Ice

Tags

NGSS.MS-PS2-2

Rougher surfaces have ...

• more friction

• less friction

• the same level of friction