By: Shon John C-Palmz

What type of wave is Sound?

Longitudinal Wave!

Vibration=Travel

Why does a person's voice sound different

when heard on a recording?

http://goanimate.com/movie/0lSfG70UEPTc?utm_source=linkshare&uid=0vPXXkfkx3XI

What did Newton add to the knowledge of sound media?

Sir Isaac Newton

http://www.voki.com/pickup.php?scid=3896209&height=267&width=200

What is sound intensity?

Sound intensity is defined as the sound power per unit area.

Units: watts/m2 or watts/cm2

High Intensity!!! : http://www.youtube.com/watch?v=tI0zEl9GhDQ

What is acoustics?

http://goanimate.com/movie/0rqVFe-OGhko?utm_source=linkshare&uid=0vPXXkfkx3XI

What is reverberation time?

Reverb!!!

Reverberation time is the time required for reflections of a direct sound to decay by 60 dB below the level of the direct sound.

Reverb time depends on frequency.

Why is it so quiet just after a snowfall?

http://goanimate.com/movie/07xByFK93G7o?utm_source=linkshare&uid=0vPXXkfkx3XI

And where does that energy go??

Why does the snow have to be fresh?

http://goanimate.com/movie/03wmes3kZiRg?utm_source=linkshare&uid=0vPXXkfkx3XI

A similar sound reduction occurs in freshly dug snow tunnels in Antarctic expeditions: the speakers must shout to be heard if they are more than 15 feet apart. Again, what happens to the sound energy?

What makes the cracking sound when you crack your knuckles?

Synovial Fluid Oxygen Nitrogen CO2

Bibliography

http://www.fluther.com/33152/why-does-my-voice-sound-different-when-i-hear-myself-speak/

Asimov, Isaac. "Sound." Encyclopedia Americana. Grolier Online, 2011. Web. 9 May. 2011.

http://hyperphysics.phy-astr.gsu.edu/hbase/sound/intens.html

http://hyperphysics.phy-astr.gsu.edu/hbase/acoustic/revtim.html

http://wiki.answers.com/Q/Why_is_it_so_quiet_after_a_snowfall

http://www.coloradocollege.edu/dept/ev/research/faculty/ovalitems/soundbasics.html