What is sound?
Sound is a vibration that propagates as a typically audible mechanicalwave of pressure and displacement through a medium such as air or water.
Speed of sound.................
—Speed of sound is the
distance traveled per unit time by a sound wave . water has a speed of 1497m/s
at 25 C in fresh water. The speed of in an ideal gas is independent of
frequency , but does vary slightly with frequency in real gas .Speed of sound
increases with the stiffness of the material , and decreases with the density .
How sound travels???
—Sound can travel in
water through waves .
— If a rock is thrown
in water it travels in different directions in waves ,
—Some times waves
occur in round shapes like rings in water .
—There are many
resources from which sound can occur in
water there are given some examples :
- vAnimal sound .
- vBoat travelling in water .
- vThrown things .
- vSwimming fish .
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