Tala

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What is light? Light is simply a name for a range for electromagnetic radiation that can be dectected by the human eye . What is our main sources of natural light? The Sun

What are some other sources of natural light? The Moon, Fireflies, Lightning, Head lights

List as many sources of artificial (man made) light as you can: Light bulbs, head lights, street lights

How fast does light travel? Light travels 300,000 kilometres per second.

How long does it take for sunlight to reach the earth? It takes 500 seconds for sunlight to reach the earth.

What is the difference between relfection and refraction? Reflection is a mirror like representation of an objects image being bounced back from another surface. Refraction is a change in direction of a state or a object due to a change of its speed.

Who invented the first light bulb? When? Humphry Davy, in 1800