Physical Science Fall Exam Review

Front

What simple machine does a catapult use?

Back

Lever

Front

How much work is done when carrying an object without moving it?

Back

0 Joules

Front

What determines the amount of potential energy in an object?

Back

Distance (height) and mass.

Front

What must happen for work to be done?

Back

The object must move in the same direction as the force.

Front

What type of waves does sound travel as?

Back

Longitudinal waves.

Front

Define potential energy.

Back

Energy stored in an object due to its position or height.

Front

What is kinetic energy?

Back

Energy of an object in motion.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.

Front

What is a lever?

Back

A simple machine that consists of a rigid bar that pivots around a fixed point.

Front

What is the role of a pulley?

Back

To change the direction of a force applied to lift an object.