Science

3. is the time taken for one complete cycle of the wave to pass a reference point. It is the reciprocal of frequency.
5. Is the sonic counterpart of the laser, using sound waves instead of light waves. It is capable of producing a strong beam of coherent ultrasound waves.
9. refers to the highness or lowness of a sound. It depends on the frequency of the sound produced by an object.
10. refers to the energy delivered to a unit area of a surface per unit time.
11. is the distance between any two successive points in a wave that are in phase with each other.
12. It is a small portion of the electromagnetic spectrum.
13. It is a longitudinal wave that is created by vibrating objects.

1. is the displacement traveled by the wave per unit time.
2. refers to the maximum amount of displacement of a particle on a medium from its resting position.
4. is the amount of light falling on a unit area. In equation,
6. are disturbances carrying energy and propagating in a medium or in a vacuum.
7. pollution is defined as unwanted or damaging sound, that is, sound that interferes with what people are trying to do or has an adverse effect on health or safety.
8. is the number of waves produced per unit time.
11. SI unit of intensity