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Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
Sound energy
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Sound energy

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Transcript

  • 1. Sound Energy
  • 2. What is sound?  Sound is – A form of energy made by vibrations. – When an object vibrates it causes the air particles around it to move. – These particles bump into particles close to them and this continues until they run out of energy.
  • 3. Try this:  Put your finger on your neck and say “aah” as loud as you can.  Now  You say it as soft as you can. can not only hear the sound, but you can feel the vibration inside your throat.
  • 4. How does sound travel?  Sound travels through all forms of matter— gases, liquids and solid.  These are called the medium.  Sound cannot travel through a vacuum.
  • 5. What is pitch?  Pitch is how high or how low a sound is.  This is a high pitched sound.  This is a low pitched sound.
  • 6. How does sound travel?  Sound passes through the medium as longitudinal waves.  When the vibrations are fast you hear a high pitch. When they’re slow, you hear a low pitch. High Pitch Low Pitch
  • 7. How else can we change sound?  We can make it louder or softer by changing the amplitude of the height of the wave.  The higher the amplitude, the louder the sound. The lower the amplitude the softer the sound. Louder Softer
  • 8. How do musical instruments create sound?  It depends on the type of instrument. There are four types. – – – – Woodwind String Percussion Brass
  • 9. Woodwinds Instruments  Woodwinds make music by blowing on the top of the instrument or on a reed. Clarinet Bassoon Oboe Flute Piccolo
  • 10. String Instruments  Strings make music by plucking or strumming the strings. Cello Guitar Harp Violin Electric Guitar
  • 11. Percussion Instruments  Percussion instruments make music by striking, shaking or scraping them. Tambourine Piano Drum Cymbals Xylophone Maracas
  • 12. Brass Instruments  Brass instruments make music by buzzing lips while blowing. Trombone French Horn Tuba Trumpet
  • 13. Did you know?  Sound travels 4 times faster through water than through air.  There is no sound in space.  Geologists use their knowledge of how sound travels through rocks to help them find oil fields.

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