Definition
Sound is what we hear, and it's caused by vibrations that travel through the air or other materials, like water or solids
When some things vibrate they create a sound, some vibrations cant be seen due to their speed or their size of vibration
Basic Principles Of Sound
Sound Wave Type -: Mechanical Wave
Wave Type -: Longitudinal
Mechanical Wave
A mechanical wave is a wave that is an oscillation of matter and is responsible for the transfer of energy through a medium
Mechanical waves are basically waves that travel through a medium like example air
Mechanical waves can travel through vacuum '
Motion Of Sound
Sound travels in longitudinal waves, sound travels in a series of repetitive compressions and rarefaction
Why do sound waves travel faster in solids than in gases?
Think in terms of particle density and bonding.
If two people are shouting equally loudly, but one is farther away, who sounds quieter and why?Explain using the inverse square law.
Why do you hear thunder after seeing lightning, even though both occur at the same time?Relate this to the speed of light vs. sound.
If the pitch of a sound increases, what happens to its frequency and wavelength?