What is refraction?
When light bends as it crosses a boundary
What material can and can’t light go through?
Transparent - see through material (can go through)
Opaque - Not see through material (can’t go through)
What is a substance that light can go through called?
A medium
What happens when a light goes through a less dense medium to a more dense medium and vise versa?
Less dense medium to a more dense medium - towards the normal
More dense medium to a less dense medium - Away from the normal
what happens when light hits a glass block
Light hits the glass at an angle, slows down and bends
going towards the normal