Sound

Sound

• > The Ear and Sound

About Sound

• Sound travels as a longitudinal wave- the particles in the medium vibrate in the direction of the wave's movement
• Sound needs vibrations
• Lower pitch = more particles vibrate
• Higher pitch = less particles vibrate
• The more particles the faster sound travels
• Vibrations through solids travel faster than vibrations through air
• Sound is energy
• The particles in the medium either bunch-up together or spread apart in response to the vibrating object
• Reflection of sound = echo
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