1
Q
What is a normal?
A
Normal is an imaginary line at 90° to surface.
2
Q
What 3 things can light do when it hits a surface?
A
- Be absorbed
- Reflect
- Be transmitted through the material (transmission)
3
Q
What are the 2 types of lenses?
A
Convex () and concave)(
4
Q
How does light travel?
A
In straight lines
5
Q
What is an incident light?
A
Light emitted from a source that hits an object
6
Q
What is the angle of incidence
A
Angle of reflection
7
Q
What is refraction
A
When light changes speed and direction as it goes through a substance.
8
Q
What is transparent
A
Allowing light to pass through
9
Q
When light enters a glass block, it bends…
A
Towards the normal
10
Q
A
S2
flashcards
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