LIGHT AND SOUND

  Light and sound are types of energy. Light and sound are waves and they propagate energy without the displacement of matter.

How is light produced?

Light is produced:

Using chemical energy.          

 If you burn wood it produces light.

Using electrical energy.

 Electrical energy produces light.

But, what is light?

BBC - Schools - KS3 Bitesize - Science - Physics - Light

Light is reflected : BBC - Schools - KS3 Bitesize - Science - Physics - Light

Light is refracted : BBC - Schools - KS3 Bitesize - Science - Physics - Light