1. what is wave interference? when a wave changes speed when a wave hits another wave or object when a wave…

Brief Explanations:

Wave interference occurs when two or more waves meet. When a wave hits another wave, their amplitudes combine according to the principle of super - position. This is the essence of wave interference. A wave changing speed is related to refraction, changing direction can be diffraction or reflection, and increasing in amplitude can be due to constructive interference but is not the definition of interference itself.

Answer:

When a wave hits another wave or object