Acoustic science is related to sound. It involves the study of sound waves, their generation, transmission, and effects in different mediums such as air, water, and solids. Acoustic science encompasses areas like sound propagation, resonance, and applications in music, communication, ...
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Echo sounding is used to measure the depth of the sea. It involves sending sound waves (usually low-frequency) into the water and measuring the time it takes for the sound waves to bounce off the seafloor and return. By calculating ...
The decibel unit is used for the intensity of sound. It quantifies the level of sound intensity based on a logarithmic scale, where each increase of 10 decibels represents a tenfold increase in intensity. This unit helps measure and compare ...
While shouting, a person keeps the palm near the mouth because in that position, the sound energy will point in one direction only. This helps to direct the sound waves forward, increasing their intensity and focusing them toward the intended ...
The process that does not occur in both light and sound is Polarization. Polarization is a phenomenon where waves oscillate in a specific direction perpendicular to their direction of propagation. While light waves can be polarized, sound waves are longitudinal ...
Two people cannot hear each other on the surface of the Moon because there is no atmosphere on the Moon. Sound waves require a medium, such as air or water, to travel and be heard. The Moon’s lack of atmosphere ...
The phenomenon where the sound of a whistle increases as a train approaches and decreases as it moves away is an example of Doppler effect. It occurs due to the relative motion between the source (train) and the observer (listener), ...
The source that causes the most noise pollution among the options provided is Airplane taking off. Aircraft taking off produce extremely high decibel levels, affecting large areas around airports. This surpasses the noise generated by motor vehicles, railway engines, and ...
Supersonic aircraft fly at speeds greater than the speed of sound, known as Mach 1. This speed varies depending on altitude and atmospheric conditions but is approximately 343 meters per second at sea level. These aircraft can travel faster than ...
Sound travels fastest through Steel. Steel has a higher density and elasticity compared to other substances listed, allowing sound waves to propagate faster. This property makes steel an excellent conductor of sound in industrial and structural applications.