The cause of echo is reflection of sound. When sound waves encounter a smooth and hard surface, such as a wall or cliff, they bounce back towards the source. If the reflected sound reaches the listener’s ears distinctively after the ...
Discussion Forum Latest Questions
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 ...