Sound

INNER EAR:



When something makes a noise, it sends vibrations, or sound waves, through the air. The human eardrum is a stretched membrane, like the skin of a drum. When the sound waves hit your eardrum, it vibrates and the brain records these vibrations as sound.

SPEED OF SOUND: The speed of sound is the rate of travel of a sound wave. The speed of sound normally depends on temperature but is nearly independent of pressure or density for a given gas. the speed of sound increases with the stiffness of the material, and decreases with the density.

DOPPLER EFFECT: Dopplper effect is the change in frequency of a wave for an observer moving relative to the source of the wave.



Wavelegth: The length of a soundwave.

If the legth of a sound wave gets