Science Ch.2

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Science Ch.2
2011-03-19 00:38:34

Science Ch.2
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  1. Doppler Effect
    Causes a sound in front of a moving sound source to seem to have a higher pitch and frequency.
  2. Amplitude
    When it is larger, the sound is louder.
  3. Medium
    Speed of sound varies from one to another.
  4. Oscilloscope
    Used to graph representations of sound wave.
  5. Pitch
    How high of low a sound seems to be.
  6. Loudness
    A measure of how well a sound can be heard.
  7. Decibels
    Sounds with 120 of these units can be painful.
  8. Tinnitus
    Results from long-term exposure to loud sounds.
  9. Ultrasonic
    Sounds that have a frequency too high for people to hear.
  10. Hertz
    Units for ezpressing frequency.
  11. Constructive
    Interference used by a band when several instruments play the same note.
  12. Sonar
    Technology that uses echoes to locate objects.
  13. Destructive
    Interference that may cause people not to hear sounds in an auditorium.
  14. Ultrasonography
    A medical procedure used to check the devlopment of an unborn baby in a mother's body.
  15. Sonic Boom
    Explosive sound heard when shock waves arrive at a person's ears.
  16. Interference
    When 2 or more waves combine to form a single wave.
  17. Echolocation
    Process in which a dolphin uses reflected waves to determine how far away objects are.
  18. Echo
    A reflected sound wave.
  19. Standing Wave
    Formed at a fundamental frequency or an overtone.
  20. Resonance
    Occurs when a vibrating tuning fork causes a rubber band to vibrate.
  21. Interaction
  22. Sound Wave
    A longitudinal wave that is caused by vibrations and travels through a material medium.
  23. Noise
    A sound that consists of a random mix of frequencies.
  24. Sound Quality
    The result of the blending of several pitches through interference.
  25. Longitudinal Wave
    A wave in which the particles of the medium vibrate parallel to the direction of wave motion.