Waves-Matter Interactions: Refraction of Waves

What happens to waves that go from one medium into another?

The Refraction of waves occurs when waves travel from one medium into another medium with different properties. Since the wavespeed changes as a wave enters a new medium, its wavelength will also change. What do you think happens to the frequency of a wave as it enters a new medium? HINT: if a wave front strikes the boundary between the two media every 3 seconds, how often do wavefronts enter the new medium? Why is the wavelength smaller in the medium where the wave travels slower?

  Experiment with this simulation to develop a more thorough understanding of the refraction of waves. What happens to the wavelength and frequency of the wave in the new mmedium? If the angle between the boundary and direction of travel of the incident wave changes, what happens to the direction of travel of the transmitted wave? Notice that in order to match the displacement as the wavefronts cross the boundary for the new wavelength in the new medium, the direction of travel for the wave in the new medium must be different from the direction of travel of the incident wave in the old medium. This bending of light is called refraction.

Use the above simulation to answer the following questions?