1. Surface Waves

2. Surface Wave A wave that has characteristics of both and waves
Waves are an example of this type of wave.

3. Surface Waves Thus far, you have seen the profile view of waves.
How do these waves look from above?
Direction of propagation
l =

4. Reflection of Surface Waves
The law of reflection states that the of is to the of reflection. r i
___ = ___

5. Refraction of Surface Waves
If the of the wave changes, then the wave is said to have refracted.

6. Refraction of Surface Waves
When surface waves move from deep water to shallower water:
The wavelength .
The amplitude .
The speed .
Why?
Because of interactions with the .
Note: The does not change!

7. As per the principle of linear superposition:
Crests will combine with crests and troughs will combine with troughs in a manner.
Where a crest meets a trough, will be totally .

8. When a wave front is incident on a barrier with an opening, the wave will out after crossing the barrier. This process is called
As the slit becomes narrower,
the amount of will .
As the wavelength ,
the amount of
, , and
hence , do not change.

9. Key Ideas Surface waves have characteristics of both and waves.
Waves transfer without transferring .
Waves can interfere with one another resulting in or interference.
The law of reflection states that angle of wave equals the angle of .
Diffraction is the of a wave when it encounters a barrier.