The wave changes direction as it bends and scatters. - Refraction because it changes in direction of the waves that occur when waves travel from one medium to another.
The wave changes direction as it changes its speed. - Refraction because the waves change speed when they pass across the boundary between two different substances, such as the light waves refracting when they pass the air to glass.
The wave changes direction at an angle equal to the angle of incidence. -reflection because if a wave hits a mirror at an angel of 36, and it will be reflected at the same angel of 36.
Explanation: Hope this helps, Have a good day!