Reflection is a change in direction of a wave between two different objects that is the Wave returns to the medium from which it begins. Refraction is When a light travels from air into water it slows down causing it to change direction slightly.
Diffraction Involves a change in direction of waves as they pass-through and opening.
Reflection is a change in direction of a wave between 2 different objects that is the wave returns to the medium from which it begins. Refraction is when a light travels from air into the water it slows down causing it to change direction slightly. Diffraction involves a change in direction of waves as they pass through an opening.