#127 (Q) Energy

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. The faster an object moves, the more kinetic energy it has.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a rock at the edge of a cliff has potential energy.

Front

Give an example of kinetic energy.

Back

A tennis ball rolling across the court is an example of kinetic energy.

Front

What type of energy does a car have when it is parked on a hill?

Back

The car has potential energy because of its position on the hill.

Front

What types of energy are involved when a television is working?

Back

A working television involves electricity, light, heat, and sound energy.

Front

What is the energy of a basketball passing through the hoop?

Back

The basketball has kinetic energy as it is in motion.

Front

Energy due to motion is called __________ energy.

Back

Kinetic energy.

Front

What is an example of potential energy?

Back

A piece of coal before it's burned has potential energy.

Front

What happens to potential energy when an object falls?

Back

As an object falls, its potential energy is converted into kinetic energy.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed; if speed doubles, kinetic energy increases by four times.