Properties of sound 

speed of sound :

sound travels quickly throught air, but it travels even faster in liquids and even faster in solids

pitch and frequency:

The pitch of the sound will sound low or high and the frquency of the wave is the number of crest or troughs that are made in a given time. The pitch of a sound is related to the frequency of the sound wave

loudness and amplitude:

Loudness is mesaure of how well a sound can be heard. The amplitude of a wave is the largest distance the particles in a wave vibrates from their rest postion.  

"seeing" amplitusde and frequency:

sound waves are invisable the only way to see sound waves is through a device called an oscilloscope.