1. By: Shon John C-Palmz

2. What type of wave is Sound?

3. Longitudinal Wave!  Vibration=Travel

4. Why does a person's voice sound different when heard on a recording?

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

6. What did Newton add to the knowledge of sound media?

7. Sir Isaac Newton  http://www.voki.com/pickup.php?scid=38962 09&height=267&width=200 http://www.voki.com/pickup.php?scid=38962 09&height=267&width=200

8. What is sound intensity?

9.  Sound intensity is defined as the sound power per unit area.  Units: watts/m 2 or watts/cm 2  High Intensity!!! : http://www.youtube.com/watch?v=tI0zEl9Gh DQ http://www.youtube.com/watch?v=tI0zEl9Gh DQ

10. What is acoustics?

11.  http://goanimate.com/movie/0rqVFe- OGhko?utm_source=linkshare&uid=0vPXXkf kx3XI http://goanimate.com/movie/0rqVFe- OGhko?utm_source=linkshare&uid=0vPXXkf kx3XI

12. What is reverberation time?

13. 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.

14. Why is it so quiet just after a snowfall?

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

16. And where does that energy go?? Why does the snow have to be fresh?

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

18. 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?

19. What makes the cracking sound when you crack your knuckles?

20.  Synovial Fluid  Oxygen  Nitrogen  CO2

21. Bibliography  http://www.fluther.com/33152/why-does-my-voice- sound-different-when-i-hear-myself-speak/ 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/sound/intens.html  http://hyperphysics.phy- astr.gsu.edu/hbase/acoustic/revtim.html http://hyperphysics.phy- astr.gsu.edu/hbase/acoustic/revtim.html  http://wiki.answers.com/Q/Why_is_it_so_quiet_afte r_a_snowfall http://wiki.answers.com/Q/Why_is_it_so_quiet_afte r_a_snowfall  http://www.coloradocollege.edu/dept/ev/research/fa culty/ovalitems/soundbasics.html http://www.coloradocollege.edu/dept/ev/research/fa culty/ovalitems/soundbasics.html