Physics

3. The distance between points of corresponding phase of two consecutive cycles of a wave.
4. disturbance that travels through a medium from one location to another location.
5. a pipe open at the top. it has a pitch about an octave higher than a closed pipe of the same length.
6. rest position or position of a medium from which the amplitude of a wave can be measured.
9. the point of maximum displacement in a periodic system.
10. increase in the amplitude of a wave due to a transfer of energy in phase with the natural frequency of the wave.
11. air or water through which waves travel.
12. The phase angle between the output signal and the applied acceleration.
13. region where the medium rises above the equilibrium position.
14. The horizontal line which measures the distance to which a projectile is thrown; the range.
15. region where the medium is lower than the equilibrium position.

1. imaginary line that joins all points reached by the wave at the same instant.
2. wave that is motionless.
7. act of impeding or obstructing; scrambling of waves or signals.
8. line that indicates only the direction of the motion of the wave front at any point where the ray and the wave front intersect.