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What is the difference between sound waves and rising in water |
| Answer» <html><body><p><strong><a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:</strong></p><p>Sound travels well through water, and this <a href="https://interviewquestions.tuteehub.com/tag/makes-2811811" style="font-weight:bold;" target="_blank" title="Click to know more about MAKES">MAKES</a> possible the remote sensing of objects and the transmission of information. Light travels only relatively short distances through water, and the greater part of the oceans is almost completely dark. When light propagates through water, its intensity decreases exponentially with distance from the source. The exponential loss of intensity is called attenuation and it is <a href="https://interviewquestions.tuteehub.com/tag/caused-7279664" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSED">CAUSED</a> by absorption and scattering. Underwater visibility depends on contrast, which is a function partly of object brightness or reflectivity and partly of attenuation with distance. Water preferentially absorbs longer wavelengths of the electromagnetic spectrum, which is why water appears blue. Sound travels much more slowly than light through water but can travel much further, and so is used for remote sensing and communication in the oceans. The speed of sound in seawater increases as the axial modulus of seawater increases, and decreases as the density increases. Sound intensities decrease with distance from the source because of two processes: spreading loss and attenuation. Acoustic oceanography experiments make use of the effect of temperature and other properties on the speed and attenuation of sound in seawater, to detect and monitor relatively short-term changes within and between water masses on <a href="https://interviewquestions.tuteehub.com/tag/scales-14900" style="font-weight:bold;" target="_blank" title="Click to know more about SCALES">SCALES</a> ranging from microstructure to whole <a href="https://interviewquestions.tuteehub.com/tag/ocean-1127860" style="font-weight:bold;" target="_blank" title="Click to know more about OCEAN">OCEAN</a> basins.</p><p></p></body></html> | |