1. Wave motion in a medium transfers only .
2. A single vibratory disturbance which moves from point to point in a material medium is known as a .
3. If a disturbance is parallel to the direction of travel of a wave , the wave is classified as .
4.The number of water waves passing a given point each second is the wave's .
5. What is the frequency of a wave if its period is 0.25 seconds? Hz
6. It takes 1 second for a sound wave to travel from a source to observer A. How long does it take the same sound wave to travel in the same medium to observer B, who is located twice as far from the source as observer A? seconds
7.A ray of light strikes at an angle of incidence of 60 Degrees. What is the angle of reflection? Degrees