Wavelength - The distance between one peak of a

wave to the next corresponding peak, or between

any two adjacent corresponding points, defined as

the speed of a wave divided by its frequency.

Amplitude - The maximum absolute value of a

periodically varying quantity.

Frequency - The number of times a specified

periodic phenomenon occurs within a specified

interval.

Loudness gets measured in decibels (dB).

Every 10 dB indicate that the sound is 10x

louder. Pitch gets measured in hertz (Hz).

Higher the Hertz higher the frequency of waves

that gets transmitted.

Sound travels better in solid mediums: this is

because there are more particles in them.

Sound cannot travel in a vacuum as there are

no particles and vibrations cannot be

transmitted.