Sound

Sound

1. Sound is a form of ENERGY.

   • The VIBRATIONS are passed on by PARTICLES
     • Sound needs a substance to pass on the vibrations , so it can travel through solids,liquids and gases but not through a VACUUM.
   • Sound is made when things VIBRATE.

2. The FREQUENCY of a sound wave is the NUMBER of COMPLETE WAVES passing a POINT each SECOND.

   • The source of the sound is VIBRATING at the same number of CYCLES PER SECOND as the FREQUENCY of the WAVE it makes.

3. Is measured in Hertz (hz)

4. Sound waves with a HIGH FREQUENCY produce HIGH PITCHED sounds.

5. The WAVELENGTH is the DISTANCE between any two IDENTICAL POINTS on neighbouring waves.

6. Half the height of the wave is called the AMPLITUDE.

7. The LOUDNESS or INTENSITY of a sound depends on the AMPLITUDE of the WAVE.

8. LOUDER notes have MORE ENERGY and have waves with BIGGER AMPLITUDES.

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