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2.2 FACTORS AFFECTING PROPAGATION OF SOUND There are several important factors, which affect the propagation of sound: geometric spreading, atmospheric effects, and surface effects. These are discussed separately below. 2.2.1 Geometric Spreading This refers to the spreading of sound energy as a result of the expansion of the wave fronts.
be based on composition. What are other factors that affect density? 11. Within the Earth System, there are also layers of air and water which surround the solid Earth. Look up the density of Earthâs atmosphere and oceans. How do the densities of air and ocean water compare with the values for Earthâs core, mantle and crust? Why are gases and