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

• similar
• opposite
• parallel
• west

What type of friction is not moving?

• static
• sliding
• fluid
• rolling

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

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Which type of friction is shown in the picture?

• rolling

• fluid

• static

• sliding

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

Rough surfaces have _________ compared to smoother surfaces.

• greater friction

• less friction

• the same level of friction

Which type of friction is shown in the picture?

• fluid

• static

• rolling

• sliding

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2