Frictional Force

Multiple Choice

True or False

Friction is a force

• True

• False

Multiple Choice

True or False

Friction is caused when two objects rub against each other

• True

• False

Labeling

Move the label to the correct spot

Drag labels to their correct position on the image

Slow an object down

Speed an object up

Labeling

Move the label to the correct spot

Drag labels to their correct position on the image

create gravity

create heat

Labeling

Move the label to the correct spot

Drag labels to their correct position on the image

create Magnetism

create Static Electricity

Multiple Choice

Rub your hands together quickly for 10 seconds.

Can you feel the heat caused by the friction?

• Yes

• No

Multiple Choice

Did you know that you can use friction to light a campfire by rubbing sticks together?

• No

• Yes

Quiz time!

Multiple Choice

Frictional force acts in the .................. direction of motion

• same

• upward

• opposite

• downward

Multiple Select

Frictional force can . . . . or . . . . a moving object (choose 2)

• speed up

• stop

• move

• slow down

Multiple Select

Why does the man use wheels to move the object? Choose 2

• it will reduce the frictional force

• it will increase the frictional force

• the object is not heavy

• the frictional force between the object and the floor is large

Hotspot

Select the point where the friction is occurring the most

Multiple Choice

What is the problem of frictional force between the boat and the water?

• it speeds up the boat

• it slows down the boat

• It overheats the boat

• the boat will wear out

Multiple Choice

Air resistance and water resistance are both types of friction.

• True

• False

Multiple Choice

Who will experience more friction?

• A

• B

Multiple Select

Which of this picture has useful frictional force?

Choose 2

Multiple Choice

if there were no frictional force, the moving coin would come to a stop on the table.

• true

• false

Multiple Choice

Putting lubricant - oil on the chain of a bicycle would

• remain the same

• increase friction

• decrease friction

Multiple Select

Which of the following are the correct ways to reduce friction?

Choose 2

• the usage of brake on the bike

• apply a lubricant (oil) on the moving part of a machine

• the soles of shoes prevent us from slipping

• use rollers / wheels to move heavy objects

Hotspot

Select the point where the friction is occurring the most

Multiple Choice

Look at the picture.

Why did the toy car on the rough surface move slower?

• Because a rough surface has less friction

• Because rough surface has more friction

Multiple Choice

Observe the picture of a smooth ice skating rink carefully.

Describe the amount of friction on the smooth ice skating rink.

• The smooth ice skating rink has less friction.

• The smooth ice skating rink has more friction.

​The End!