Uses of Energy

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, such as heat, light, sound, and mechanical.

Front

What are the two main types of energy?

Back

The two main types of energy are potential energy (stored energy) and kinetic energy (energy of motion).

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons. It powers devices like lights and appliances.

Front

What is light energy?

Back

Light energy is a form of energy that is visible to the human eye. It is produced by sources like the sun, light bulbs, and fire.

Front

What is sound energy?

Back

Sound energy is the energy produced by vibrating objects, which creates sound waves that travel through the air.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total energy of all the particles in an object.

Front

What is an echo?

Back

An echo is a reflected sound wave that is heard after the original sound is made.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential and kinetic energy in an object that is used to do work.

Front

What is an example of electrical energy being converted to sound energy?

Back

Speakers at a football game convert electrical energy into sound energy to amplify the announcer's voice.

Front

What is an example of thermal energy being used?

Back

A hot plate boiling water in a science lab uses thermal energy to heat the water.