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Sound information for 8 grade level?

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Haya L asked:


how is sound heard
what is an eco
how does sound waves travel

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This entry was posted on Saturday, March 14th, 2009 at 9:19 pm and is filed under Other - Science. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.

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2 Responses to “Sound information for 8 grade level?”

1. asian mail order bride Says:
   March 17th, 2009 at 10:12 am

   in your ears there are receptors which feels the wave of sound and informs your brain about it. you brain translate these waves into the voice.

   2) when any bid obstacle blocks the path of sound waves then these waves reflect from that obstacle and returns.
   these returning waves are known as ECHO.

   3) sound waves travel through the molecules in air.

2. hot russian bride Says:
   March 18th, 2009 at 1:44 am

   Sound is heard by stimulation of the tiny hairs in the cochlea in the inner ear. This occurs after the eardrum has been caused to vibrate, then the 3 bones and then the cochlea.

   an echo is a reflected sound wave

   sound waves travel through a medium(material) . they are longitudunal that vibrate in the same direction they are traveling, waves with first a squeezed in area and then a spread apart area.