light and emw

For you to see something, light must enter your eyes. The Sun, lamps, lasers, and glowing TV screens all emit (send out) their own light. They are

................ .

Most objects are ............ . You see them only because daylight, or other light, bounces off them. They reflect light, and some of it goes into your eyes.

You can see this page because it reflects light. The white parts reflect most

light and look bright. However, the black letters ............. nearly all the light

striking them. They reflect very little and look dark

Write name of process

Write name of phenomen

Write name of phenomena

Some effects of light are best explained by thinking of light as a stream of tiny

‘energy particles’. Scientists call these particles .......... .

Lasers emit light of a

single wavelength and colour. Light like this is called ................. light.

When a ray of light strikes a mirror, it is reflected as shown on the left. The

incoming ray is the ................ .........

When a ray of light strikes a mirror, it is reflected as shown on the left. The incoming ray is the incident ray, the outgoing ray is the .......... .......