Light
by YIP PIERRE
1. The speed of light is 299 792 458 metres per second.
2. When light is blocked,it forms a shadow.
3. Light travels in a straight line.
4. Light is a form of energy which enables us to see.
5. Light will be reflected into our eyes to let us see things.
6. Only light sources produce light.Examples of light sources:Sun,table lamp,street lamp.