Light Flashcards
1
Q
How fast does light travel
A
300 000 k/s
2
Q
What does light travel though space as
A
Electromagnetic waves in straight lines
3
Q
What do u call light that travels in straight lines
A
Rectilinear propagation
4
Q
What are the seven colours of the light spectrum
A
Red, orange, yellow, green, blue, indigo and violet (ROYGBIV)
5
Q
What is opaque
A
A substance that is transparent
6
Q
What happens to light when it hits a surface
A
Some will be absorbed and the rest reflected
7
Q
What do U call the Ray that hits a surface
A
It is called the incident Ray
8
Q
The Ray that bounces off is called?
A
The reflected Ray
9
Q
When light hits ur eye it travels to the back and hits what
A
Your retina
10
Q
How is a rainbow formed
A
Light from the sun enters a raindrop and refracts. The light refracts again and the couloir splits up
