Work, Power, and Energy Test Review

This simple machine can split an object. What is it?

• Lever

• Wedge

• Pulley

• Screw

This machine can raise, lower or move a load using ropes.

• Wheel & axle

• Lever

• Pulley

• Screw

What are the parts of a lever?

• A fulcrum

• A wedge

• A wheel & axle

• Pulley

A slide is an example of an?

• lever

• pulley

• wheel & axle

• incline plane

A slanting surface connecting a lower level to a higher level is a?

• Screw

• Inclined plane

• Wheel & axle

• Pulley

The formula for power is?

• Work x time

• Work / Time

• Force x distance

• Force / distance

Power is measured in?

• Joules

• Newtons

• Watts

• Meters

A figure skater lifts his partner, who weighs 450N, 1.0 m in 3.0 s. How much power is needed?

• 15 watts

• 150 watts

• 1.5 watts

• 105 watts

A dog pushing a bowl across a floor is?

• doing the scientific definition of work

• NOT doing the scientific definition of work

A person carries boxes 10 m with 20 N of force. What is the Work?

• 200 J

• 2000 J

• 30 J

• 300 J