Science// Sound

This is a KS3 piece of work

HideShow resource information
  • Created by: issy_
  • Created on: 16-06-14 17:31
View mindmap
  • Sound
    • Longitudinal Waves
      • -Have Vibrations      -Vibrations are parallel to direction of wave           -Vibrations are parallel to direction of energy transfer
        • -Sound Travels as Longitudinal Pressure Wave                -Sound waves caused by vibrating objects             -Sound needs to travel through medium (air, water) to pass on sound vibrations         -Vibrations are passed through medium as a series of compressions -Sound can't travel in space because no particles
          • -More particles faster sound wave travels     -Denser medium faster sound travels because more particles          -Faster in solids than liquids, liquids faster than gases      -Sound travels faster than light
    • Travels
      • -Sound Travels as Longitudinal Pressure Wave                -Sound waves caused by vibrating objects             -Sound needs to travel through medium (air, water) to pass on sound vibrations         -Vibrations are passed through medium as a series of compressions -Sound can't travel in space because no particles
        • -More particles faster sound wave travels     -Denser medium faster sound travels because more particles          -Faster in solids than liquids, liquids faster than gases      -Sound travels faster than light
    • Reflected
      • -Sound can be reflected and refracted like light                 -Echo is sound reflected from surface
    • Absorbed
      • -Sound can be absorbed         -Absorbed into soft things like carpets etc...
        • -Sound can be reflected and refracted like light                 -Echo is sound reflected from surface
    • Speed
      • Frequency
        • -Frequency is pitch of sound  -Frequency of sound is number of complete waves that pass a point per second      -A measure of how high-pitched the sound is           -High frequency means high-pitched sound  -measured in Hertz (Hz) = vibrations per second
          • -Have Vibrations      -Vibrations are parallel to direction of wave           -Vibrations are parallel to direction of energy transfer
        • Hearing
          • -Sound waves make your ear drum vibrate.   -Object vibrates, Air vibrates, Ear drum vibrates, Ear bones vibrate, Hairs in cochlea vibrate + send message to brain along auditory nerve
            • -Range of frequencies (vibrations per second) you can hear -Humans = 20-20 000 Hz, meaning we can't hear low pitched sounds lower than 20Hz or high pitched sounds over 20 000Hz     -Some animals can hear much higher frequencies
        • Auditory ranges
          • -Range of frequencies (vibrations per second) you can hear -Humans = 20-20 000 Hz, meaning we can't hear low pitched sounds lower than 20Hz or high pitched sounds over 20 000Hz     -Some animals can hear much higher frequencies

      Comments

      No comments have yet been made

      Similar Fun resources:

      See all Fun resources »See all Fun resources »