Physics: Lesson 8 Friction

Friction is a force that acts in the ______ direction of the intended motion of an object.

• Same

• Parallel

• Opposite

• Northern

• None of the Above

Friction changes the energy of an object from kinetic energy to _____ energy.

• Electric

• Stored

• Solar

• Heat

• Wind

In what way can friction be reduced?

• Using grease

• Using a wheel

• Using oil

• Using a ball

• All of the above

True or False: Different types of surfaces create different amounts of friction.

• TRUE

• FALSE

The measurement of the amount of friction a surface will generate is called the '______ of friction'.

• Calibration

• Coefficient

• Smoothness

• Description

• Fact

A bowling ball on a bowling lane is an example of what type of friction?

• Dry friction

• Rolling friction

• Fluid friction

• Static Friction

• None of the Above

A block sitting still on the side of a ramp is an example of what type of friction?

• Dry friction

• Rolling friction

• Fluid friction

• Static Friction

• None of the Above

Air resistance on a flying airplane is an example of what type of friction?

• Dry friction

• Rolling friction

• Fluid friction

• Static Friction

• None of the Above

In what way does friction help us in our everyday life?

• Brakes on a car

• Standing up

• Climbing a hill

• Skiing down a slope

• All of the above

A child sliding down the slide at a park is an example of what type of friction?

• . Dry friction

• . Rolling friction

• Fluid friction

• Static Friction

• None of the Above