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Sound Energy
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.
Try this:

 Putyour finger on your neck and say “aah”
 as loud as you can.

 Now   say it as soft as you can.

 You  can not only hear the sound, but you can
 feel the vibration inside your throat.
How does sound travel?

 Soundtravels through all forms of matter—
 gases, liquids and solid.

 These   are called the medium.



 Sound   cannot travel through a vacuum.
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.
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
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
How do musical instruments create
sound?

 Itdepends on the type of instrument. There
  are four types.

   –   Woodwind
   –   String
   –   Percussion
   –   Brass
Woodwinds Instruments

 Woodwinds    make music by blowing on the
  top of the instrument or on a reed.


                           Clarinet
                                      Bassoon


        Oboe

Flute
                          Piccolo
String Instruments

     Strings  make music by plucking or
         strumming the strings.




                Cello   Guitar               Harp

Violin

                                  Electric
                                  Guitar
Percussion Instruments

 Percussion    instruments make music by
   striking, shaking or scraping them.


                  Tambourine                 Piano


Drum




                       Xylophone       Maracas
       Cymbals
Brass Instruments

 Brass  instruments make music by buzzing
  lips while blowing.


                        Trombone


French Horn

                                     Tuba



              Trumpet
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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Sound energy, Sound

  • 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:  Putyour finger on your neck and say “aah” as loud as you can.  Now say it as soft as you can.  You can not only hear the sound, but you can feel the vibration inside your throat.
  • 4. How does sound travel?  Soundtravels 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?  Itdepends 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 Xylophone Maracas Cymbals
  • 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.