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  1. Explain behavior of waves at different boundaries
  2. Law of Strings
  3. Standing wave
  4. Threshold of Hearing
  5. Sympathetic Vibrations
  6. Refraction
  7. Electromagnetic Waves
  8. Explain how the ear detects sound.
  9. Compare the velocity of sound in solids, liquids, gases and space.
  10. Audio Spectrum
  11. Mechanical Waves
  12. How is sound produced and transmitted?
  13. Law of Reflection
  14. Damping
  15. Reflection
  16. Echo Location
  17. Ultra Sonic
  18. Harmonics
  19. Antinode
  20. Medium
  21. Destructive Interference
  22. Construction Interference
  23. Pitch
  24. Rectilinear propagation
  25. Loudness
  26. Node
  27. Fundamental frequency
  28. Doppler Effect
  29. Frequency
  30. Threshold of Pain
  31. Infra Sonic
  32. Transverse Waves
  33. Longitudinal Waves
  34. Intensity
  35. Principle of Superposition
  36. Sonic Spectrum
  37. Quality of Sound
  38. Impedance
  39. Wave
  40. Relative Intensity
  41. Interference
  42. Diffraction
  43. Beat
  44. Wavelength
  45. Amplitude
  1. a occurs when a standing sound wave is produced in a tube causing the tube to produce an amplified sound
  2. b maximum displacement of a wave from the rest position or the size of the wave or how large the wave is
  3. c range of frequencies above 20,000 Hz. Many animals can hear thes frequencies
  4. d power of the sound wave passing through an area
  5. e 120 dB over a long period of time
  6. f whole number multiples of the fundamental frequency
  7. g number of waves passing each second, measured in hertz
  8. h subjective perception of intensity
  9. i bending of a wave as it passes at an angle into another medium
  10. j animals like bats send out ultrasonic frequencies and "hear" the reflection to determine if an object is near
  11. k sound travels down the auditory canal and strikes the eardrum. The vibrating eardrum causes 3 tiny bones on the other side of the eardrum to vibrate, they send pulses through the cochlea which is lined with cilia. The movement of cilia is detected as sound.
  12. l particals on these waves vibrate parallel to the direction that the wave is moving
  13. m particles on the wave vibrate perpindicular to the direction that the wave is going
  14. n the distance from a point on one wave to the identical point on the next wave
  15. o wave undergoes no displacement
  16. p harmonics are the whole number multiples of this
  17. q dissipation of wave energy as the wave moves away from the source
  18. r subjective perception of frequency
  19. s when 2 waves pass each other, the resulting wave is the vector of the 2 waves. After they meet, they continue undisturbed
  20. t 2 sound waves close in frequency prducing an oscillating sound wave
  21. u require a medium to travel through (water and sound waves)
  22. v when a wave strikes a rigid barrier, it reflects inverted. When it strikes a non-reigid barrier, it reflects upright
  23. w how easily or difficultly a wave can be launched in a medium
  24. x part of the sonic spectrum that humans can hear frequencies between 20Hz and 20,000Hz
  25. y range of frequencies below 20Hz
  26. z substance that the wave is passing through
  27. aa the effect of 2 waves passing each other as described by the principle of Superposition
  28. ab waves will bounce off barriers at an angle equal to the angle they will strike the barrier
  29. ac wave undergoes maximum displacement
  30. ad bending of waves around barriers
  31. ae a disturbance passing through a medium or space
  32. af the waves partly or completely cancel as they pass
  33. ag "Angle of incidence= Angle of reflection"
  34. ah interference pattern produced when 2 waves of the same frequency and wavelength pass each other
  35. ai waves add as they meet
  36. aj decibel scale, can also be called relative intensity
  37. ak depends upon the number of harmonics produced and their intensities
  38. al change in frequency heard when the source of sound and the person recieving the sound are in relative motion
  39. am sound travels fastest in solids, slower in liquids, slowest in gases and it doesn't travel at all in space
  40. an do not require a medium (light and radio waves)
  41. ao sound is produced by vibration, a vibrating object will send out a wave, the faster the object vibrates, the higher the frequency
  42. ap for the frequency produced by a vibrating string: the frequency is directly proportional to the tension and the frequency is inversely proportional to the string's density, diameter, and length
  43. aq wave swill travel in straight lines or paths in a uniform medium
  44. ar complete range of the longitudinal waves
  45. as compares the intensity to the softest sound or "threshhold of hearing"