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Waves (Grade 8)

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What is highest point of a wave called?
  1. amplitude
  2. trough
  3. crest
  4. compression
The lowest part of the wave is called the                .
  1. crest
  2. trough
  3. amplitude
  4. wavelength
The                 is described as the distance between one crest or trough to another crest or trough.
  1. wavelength
  2. frequency
  3. wave velocity
  4. amplitude
If the velocity remains constant, which of the following increases as the wavelength decreases?
  1. Frequency
  2. Amplitude
  3. Speed
  4. Time
When a wave "bounces back" it is called                .
  1. refraction
  2. reflection
  3. reverberation
  4. vibration
The bending of waves is called                .
  1. refraction
  2. reflection
  3. seismic warping
  4. seismic moment
Wave speed is calculated by                                     .
  1. multiplying frequency and wavelength
  2. dividing frequency and wavelength
  3. adding frequency and wavelength
  4. subtracting frequency and wavelength
What is it called when the crests of two waves overlap and result in an increased wave amplitude?
  1. destructive interference
  2. constructive interference
  3. Doppler effect
  4. resonance
In 1940 the Tacoma Narrows Bridge collapsed after exhibiting wave motion during 40 mile per hour winds. Which two principles of waves best explain the bridge collapse?
  1. shock and bow waves
  2. refraction and reflection
  3. natural frequency and resonance
  4. constructive and destructive interference
Draw a transverse wave. Label a crest, trough, wavelength, and amplitude.

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