Waves Flashcards
1
Q
What is a light source?
A
Anything that produces light
2
Q
What is a source of light?
A
Anything that produces light
3
Q
How fast does light travel?
A
300 million metres a second
4
Q
What is sound measured in?
A
Decibels
5
Q
What are the primary colours of light?
A
Red, Blue and Green
6
Q
When do waves slow down?
A
Less dense materials
7
Q
What type of wave is light?
A
A transverse wave
8
Q
What is a plane mirror?
A
A flat mirror
9
Q
When do water waves reflect?
A
When they hit surfaces
10
Q
What type of wave is sound?
A
A longitudinal wave
11
Q
Normal= ___ boundary
A
90 degrees
12
Q
What is refraction?
A
Bent light
13
Q
What can white lift create?
A
A spectrum
14
Q
What is the angle between the normal and incoming Ray called?
A
Angle of incidence
15
Q
Why does light refract?
A
Because the speed changes
