Physical Science- Machines, Work and Power

Front

What happens to power as the time to do a certain amount of work decreases?

Back

Power increases.

Front

How many types of simple machines are there?

Back

There are 6 types of simple machines.

Front

What is the ability to do work or cause change called?

Back

Energy.

Front

Which of the following is NOT an example of work?

Back

Laying on the couch.

Front

How do simple machines make work easier?

Back

By decreasing the amount of force necessary to complete a task.

Front

Define 'work' in a physical science context.

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is a simple machine?

Back

A device that makes work easier by allowing us to push or pull over increased distances.

Front

List the six types of simple machines.

Back

Lever, Inclined Plane, Wheel and Axle, Pulley, Screw, Wedge.

Front

What is power in the context of work?

Back

Power is the rate at which work is done.

Front

How is power calculated?

Back

Power = Work / Time.