CBSE BoardEnglish MediumSTD 11 HumanitiesPsychologySensory, Attentional And Perceptual Processes1 Mark
Question
How does a sound wave get produced in an environment?
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Answer
Sound result from pressure vibrations in the external environment. Any physical movement disturbs the surrounding medium (i.e. air) and pushes the air molecules bak and forth. This results in changes in pressure that spread outward in the form of sound waves, travelling at a rate of about 1,100ft/ sec.
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