- When electromagnetic waves pass through as a substance what four things can happen to them?
- When light passes through glass it can refract. What happens to the speed, frequency and wavelength of the wave.
- Draw a diagram of a ray of light being refracted passing from air into glass.
- Why does the light slow down and which way does it bend?
- What is a wavefront?
- Draw a refraction diagram showing what happens to the wavefronts.