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S ound Energy. J agger , D r e w F renc h , and D re w Annett. How does sound move?. The speed of sound is about 330 meters per second. Sound waves require some kind of material to travel through. Sound waves can not move through a vacuum. Sound moves through the air at 340m per second.

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s ound energy

SoundEnergy

Jagger, DrewFrench, and DrewAnnett

how does sound move
How does sound move?
  • The speed of sound is about 330 meters per second.
  • Sound waves require some kind of material to travel through.
  • Sound waves can not move through a vacuum.
  • Sound moves through the air at 340m per second.
  • Hard materials can reflect sound so that the sound travels back in the opposite direction, this is called an echo.
  • The faster the vibrations are the higher sound goes, and the slower they go the lower the sound
what is sound made of
What is sound made of?
  • Sound energy is the energy produced by sound vibrations as they travel through a specific medium.
  • Sound energy is, therefore, a form of mechanical energy.
  • Sound is measured in joules.
  • Puckering, blowing, shaking, beating or scraping can make sounds.
  • Sound is sent out through gases, and liquids as longitudinal waves, also called compression waves.
ho w is it useful
How is it useful?
  • Sound is used to locate fish, find submarines, and measure temperature in the ocean.
  • Bats and dolphins use echolocation which is when sound bounces off an object and back to the animal.
  • Submarines don't have telephone or cable connections, radio signals don't spread underwater, so a submarines relies on sound to send and receive digital data.
  •  Sound gives us music.
  • Powerful instruments can have an emotional effect on someone.
  •  Sound recordings let us listen to all kinds of music.
what s bad about sound
What’s bad about sound??
  • Sound can cause stress and pain.
  • Dogs can perceive vibrations higher than 20 kHz.
  • For humans hearing is normally limited to frequencies between about 20 Hz and 20,000 Hz.
bibliography
Bibliography
  • www.wisegreek.com
  • www.wikipedia.org
  • www.prisci.gold.ac.uk/hearingwhispers/facts.htm
  • www.dosits.org
  • www.thinkquest.org
  • Our Science Notebook!!

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