The direction of the force of friction is always _____ the direction of motion

• similar to

• opposite

• unchanged in

• the same as

Which of the following are lubricants?

• oil and butter

• sand and sawdust

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

• metal

• tile

• sand paper

• plastic

The amount of friction depends on the weight of the objects pressing together and

• the volume of the objects

• the texture of the surfaces

• the color of the objects

Wheels on a skateboard most likely experiences-

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

Sally experiences-

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

Swimming fish experience-

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

Tags

NGSS.MS-PS2-2

A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate

• surface area
• air resistance
• descent velocity
• gravity 

Tags

NGSS.MS-PS2-2

When there is friction, the energy of an object's motion is converted into _______ energy

• heat

• electric

• solar

• geothermal

Tags

NGSS.HS-PS3-4

Only solids can produce friction

• true

• false