What is light?
Light is a form of energy which our sense of sight can detect. It is made of electro-magnetic radiation and travels in a straight path.
What is the speed of light?
The speed of light is the speed at which light travels. It is about 300,000 kilometres per second. Nothing travels faster than light.
Why are there different colours of light?
There are different colours of light because they are light waves which have different wavelengths. Red light has the longest wavelength while violet light has the shortest wavelength.