Friction Basics

Friction

Lesson To Be Learn

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Multiple Choice

Fluid friction includes when an object moves through air.

• true

• false

Multiple Choice

Rolling friction is when an object ___________ over a surface.

• bounces

• rolls

• slides

Multiple Choice

Rolling friction is when an object ___________ over a surface.

• bounces

• rolls

• slides

Multiple Choice

What does friction do to the motion of an object?

• Friction slows down or stops an object.

• Friction keeps an object from moving.

• Both of the above

Multiple Choice

Friction is the ____________ that one surface exerts on another surface.

• gravity

• motion

• force

Multiple Choice

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

Multiple Choice

Sliding friction is when two _____________ surfaces slide over one another.

• liquid

• oil

• solid

Multiple Choice

There are _________ types of friction.

• 2

• 1

• 4

• 5

Multiple Choice

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

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

Multiple Choice

When we rub our hands together _________.

• frictional force works between them

• energy is released

• our hands become warm

• all off the above

Multiple Choice

Rough surfaces have _________

• greater friction

• less friction

• the same level of friction

Multiple Choice

Friction is an example of _____________

• contact force

• non contact force

• both of these

• none of these

Multiple Choice

Frictional force depends on ____

• surface area in contact

• roughness of surface

• both a and b

• none of the above

Multiple Choice

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

• similar
• opposite
• parallel
• west

Multiple Choice

Swimming fish experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Multiple Choice

Wheels of a shopping cart experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Multiple Choice

Sally experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Multiple Choice

Wheels on a skateboard most likely experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Multiple Choice

What direction does friction act relative to motion?

• in the same direction
• in the opposite direction 
• need more information
• depends on the force

Multiple Choice

The force that acts in the opposite direction of motion when two surfaces come in contact. 

• Force
• Friction
• Static
• Kinetic 

Multiple Choice

What does friction produce?

• light
• sound
• heat
• gravity

Multiple Choice

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Multiple Choice

Which of these materials do you predict would have the MOST amount of friction

• Metal

• Tile

• Sand Paper

• Denim

Multiple Choice

When you go down a slide which two forces are competing in a tug of war?

• Gravity and Sliding Friction

• Gravity and Rolling Friction

• Gravity and Your Friend Pushing You

• Gravity and Pushing Friction

Multiple Choice

Imagine you decide to jump out of an airplane 🛩

Which force is going to pull you down towards earth

• Fluid Friction

• Static Friction

• Gravity

• The wind from the airplane

Multiple Choice

Which type of friction keeps objects from sliding around all over the place

• Static Friction

• Rolling Friction

• Fluid Friction

• Sliding Friction

Multiple Choice

True or False: objects that are smooth have LESS friction than objects that are rough

• TRUE

• FALSE