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http://www.oceanmammalinst.org/songs.html

Listen to the whales\' songs and explain the effects of sound waves in air and water by bringing examples with formulae. Discuss the possible changes of whales\' songs as a result of temperature, wave speeds etc. How could you distinguish the whales\' songs from other songs?

Solution

Sound is a mechanical wave that moves through a medium. The medium’s particles undergo displacement of various kinds, depending on the wave’s nature. The speed of travel of a wave depends on the mechanical properties of the medium. The speed of mechanical wave (v) is the product of the wave length () and the period (T):v = *T.The behavior of sound propagation is generally affected by the relationship betweendensityand pressure. This relationship, affected by temperature, determines the speedof sound within the medium.