Chapter 16 - "Friction"

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

• similar
• opposite
• parallel
• west

Which type of friction occurs when an object moves through a liquid or gas?

• sliding
• fluid
• static
• rolling

Which type of friction occurs when solid surfaces slide over each other?

• rolling
• static
• sliding
• fluid

Which type of friction occurs when an object rolls over or rotates on a surface?

• sliding
• static
• fluid
• rolling

Which type of friction occurs when objects are not moving?

• static
• sliding
• fluid
• rolling

Oil between machine parts would be an example of which type of friction?

• static
• sliding
• fluid
• rolling

Sally sliding down the slide would be an example of which type of friction?

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

Wheels of a shopping cart would be an example of which type of friction?

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

Objects balanced on Timmy's head would be an example of which type of friction?

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

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