Waves Can be Refracted Flashcards
1
Q
When do waves travel at different speeds?
A
In substances which have different densities
2
Q
What do EM waves travel more slowly in?
A
Denser media (usually)
3
Q
What do sound waves travel faster in?
A
Denser substances
4
Q
What happens when a wave crosses a boundary between two substances?
A
It changes speed
5
Q
What happens if the wave hits the boundary ‘face on’?
A
It slows down but carries on in the same direction
6
Q
When the wave changes direction it is said to have been?
A
Refracted
7
Q
Look at the diagram page 32
A
Ok
