GRADE 6 SCIENCE FRICTION 2

How does friction affect speed?

• more friction decreases speed

• less friction decreases speed

• more friction increases speed

• less friction doesn't affect speed

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

• similar

• parallel

• opposite

• west

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

• Brakes used on a bike

• Tyres from a car on the road

• Tread on the bottom of your shoes

• All are examples that are helpful

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

• Pencil marking on paper
• Engine parts wearing out
• sand placed on ice in the winter
• Using an eraser to erase marks

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.4-PS3-2

Rough surfaces have _________

• greater friction

• less friction

• the same level of friction

The shape of an object which helps in reducing friction

• circular shape

• streamlined

• flat

• none of the above

What type of friction is not moving?

• static
• sliding
• fluid
• rolling

Which would NOT be a way of reducing friction?

• making the surfaces smoother
• using lubricants such as waxes, oils, or grease
• changing from sliding friction to rolling friction using ball bearings
• Using kitty litter on snow and ice to help your car gain traction

Which of the following statements is false?

• Friction can only slow things down

• Friction is never useful

• Friction can stop things from moving

• Friction can be reduced by lubrication