By: Shon John C-Palmz. What type of wave is Sound?
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Transcript of By: Shon John C-Palmz. What type of wave is Sound?
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By: Shon John C-Palmz
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What type of wave is Sound?
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Longitudinal Wave!
Vibration=Travel
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Why does a person's voice sound different
when heard on a recording?
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http://goanimate.com/movie/0lSfG70UEPTc?utm_source=linkshare&uid=0vPXXkfkx3XI
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What did Newton add to the knowledge of sound media?
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Sir Isaac Newton
http://www.voki.com/pickup.php?scid=3896209&height=267&width=200
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What is sound intensity?
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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
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What is acoustics?
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http://goanimate.com/movie/0rqVFe-OGhko?utm_source=linkshare&uid=0vPXXkfkx3XI
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What is reverberation time?
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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.
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Why is it so quiet just after a snowfall?
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http://goanimate.com/movie/07xByFK93G7o?utm_source=linkshare&uid=0vPXXkfkx3XI
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And where does that energy go??
Why does the snow have to be fresh?
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http://goanimate.com/movie/03wmes3kZiRg?utm_source=linkshare&uid=0vPXXkfkx3XI
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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?
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What makes the cracking sound when you crack your knuckles?
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Synovial Fluid Oxygen Nitrogen CO2
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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