Refraction and Diffraction Flashcards
1
Q
Define refracted
A
This means they go through a new material but change direction
2
Q
Define diffracted
A
This means the waves ‘bend round’ obstacles, causing the waves to spread out
3
Q
Waves diffract when…
A
they pass through a gap or pass an obstacle
4
Q
Diffraction:
The narrower the gap…
A
the longer the wavelength, the more the wave spreads out
5
Q
Waves refract when…
A
a wave crosses a boundary between two substances
6
Q
Refraction:
If a wave hits a boundary straight on…
A
it carries on in the same direction
7
Q
Refraction:
If a wave hits a boundary at an angle…
A
the wave changes direction
