How do we see stuff?

What is the normal line?

What is the Law of Reflection?

What is specular reflection?

What is diffuse reflection?

What does a diagram to show the formation of images in mirrors look like?

What is a virtual image and how is it different to a real one?

What is refraction and why does it happen?

What do the effects of refraction of light do?

What does a convex lens do to parralel rays of light?

What does a concave lens do to parallel rays of light?

What happens to white light when it is shone through a prism?

What is the EM spectrum?

What are the different EM waves used for?

Why are UV, X - rays and Gamma rays dnagerous?