So I received my first
comment from my No. 1 fan! :D
He asked me what sound waves are, so this is my
reply:
There are two kinds of
waves, transverse and longitudinal.
Here is a picture of both of them:
 |
| http://w3.shorecrest.org/~Lisa_Peck/Physics/All_Projects/Biggie_Project/2010/meghan/meghan1/longitudal%20compresion%20waves.jpg |
Sound waves are longitudinal waves. A
longitudinal wave is in which the particles of the medium travel in the
direction of the propagation of the wave. In a sound wave, there can be two
types of regions, either compression or rarefaction. The compressions are regions of high air pressure while the rarefactions are regions of low pressure.
The following picture
will help to illustrate the concept of compression and rarefaction:
 |
| http://images.tutorvista.com/cms/images/95/longitudinal-waves-rarefaction.jpeg |
Feel free to ask me more questions on Dolphins! I will try my very best to answer your questions.
Let's go, Dolphin Lovers! <3
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