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Waves (Grade 8)

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Waves

1. 
What is highest point of a wave called?
  1. amplitude
  2. trough
  3. crest
  4. compression
 
2. 
The lowest part of the wave is called the                .
  1. crest
  2. trough
  3. amplitude
  4. wavelength
3. 
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
 
4. 
If the velocity remains constant, which of the following increases as the wavelength decreases?
  1. Frequency
  2. Amplitude
  3. Speed
  4. Time
5. 
When a wave "bounces back" it is called                .
  1. refraction
  2. reflection
  3. reverberation
  4. vibration
 
6. 
The bending of waves is called                .
  1. refraction
  2. reflection
  3. seismic warping
  4. seismic moment
7. 
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
 
8. 
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
9. 
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
 
10. 
Draw a transverse wave. Label a crest, trough, wavelength, and amplitude.



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