"Friction" for Acellus Steps 104 - 105 Quizizz

Why do your hands get warmer when rubbed together?

• gravity

• friction

• combustion

What happens when you rub your hands together very fast?

• Friction causes them to warm up

• Friction causes them to cool down

• Gravity causes them to warm up

In order for friction to occur, there must be ________.

• surfaces being rubbed against each other

• an object that is motionless and a wet surface

• an object that is motionless and a high temperature

When two surfaces rub together, the types of surfaces and how hard they are being pressed together ___________.

• will affect how much gravity is present

• will affect how much friction is present

• will NOT affect how much friction is present

Which of the following is a TRUE statement about friction?

• When two objects are NOT in contact, an enormous amount of friction is created.

• How hard two surfaces are being pressed together will affect how much friction is created.

• How hard two surfaces are being pressed together will NOT affect how much friction is created.

Which of the following occurs when two different surfaces are rubbed against each other?

• Friction

• Anti-gravity

• Magnetism

Heat can be caused by ___________.

• a decrease in friction

• an increase in friction

• friction remaining at zero

An increase in friction can cause which of the following to occur?

• a decrease in temperature

• an increase in temperature

• no change in temperature

Which one of these surfaces would have very little friction if you tried to slide across it?

• rubber track

• concrete sidewalk

• ice rink

Which of the following surfaces would create the LEAST amount of friction if an object was slid across it?

• an ice rink

• a gravel road

• a concrete sidewalk