Physical Science - Chapter 8 Review

Front

What is work in physics?

Back

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

Front

How is power defined in physics?

Back

Power is the rate at which energy moves from one object to another.

Front

What type of lever is a shovel?

Back

A shovel is an example of a Third Class Lever.

Front

What is an example of a wedge in physics?

Back

An ax is an example of a wedge.

Front

When is work done on an object?

Back

Work is done on an object if the object moves when the force is applied and the object moves in the direction of the force.

Front

What is a machine in physics?

Back

A machine is a device that makes work easier by changing the size or direction of a force.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.