What do you mean by wave? How do you measure wavelength and wave height ?( i study in class 7 ok)
Answers
What is Wave :
When the water on the surface of the ocean rises and falls alternately, they are called Waves. During a storm, the winds blowing at very high speed form huge waves. These may cause tremendous destruction. An earthquake, a volcanic eruption or underwater landslides can shift large amounts of ocean water.
How to measure Wavelength :
The wavelength can always be determined by measuring the distance between any two corresponding points on adjacent waves. In the case of a longitudinal wave, a wavelength measurement is made by measuring the distance from a compression to the next compression or from a rarefaction to the next rarefaction.
How to measure Wave Height :
The wave height is the vertical difference between a wave crest and a wave trough. The wave length is the horizontal distance between two consecutive wave crests. The wave period is the time interval between two consecutive wave crests. The wave velocity (celerity) equals the wave length divided by the wave period