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Seventh Grade (Grade 7) Waves and Sound Questions

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Grade 7 Waves and Sound
These waves move side-to-side, much like snakes.
  1. Rayleigh waves
  2. primary waves
  3. Love waves
  4. secondary waves
Grade 7 Waves and Sound
What is the speed of sound in air?
  1. 340 m/s
  2. 600 m/s
  3. 340,000,000 m/s
  4. 205 m/s
Grade 7 Waves and Sound
From the doppler effect lab, when the car was moving towards us, we heard a high pitch from the horn. Why was that?
  1. As the car approached us, the sound got louder causing a higher pitch.
  2. As the car approached us, the wavelength increased.
  3. As the car approached us, the wavelength decreased.
  4. As the car approached us, the frequency decreased.
Grade 7 Waves and Sound
What is the distance between two consecutive crests or troughs called?
  1. wavelength
  2. amplitude
  3. speed
  4. frequency
Grade 7 Waves and Sound
Alexander Graham Bell is best known for which invention?
  1. the blender
  2. the scale
  3. the telephone
  4. the telescope
Grade 7 Waves and Sound
What is the time it takes to go through a complete wavelength?
  1. Wavelength
  2. Wave period
  3. Frequency
  4. Infrared light
Grade 7 Waves and Sound
A polarizing filter is designed to
  1. let light in.
  2. increase vibrations.
  3. block light out.
  4. help you get a sun tan.
Grade 7 Waves and Sound
The amount of time it takes consecutive wave crests or troughs to pass a given point is called the
  1. wavelength.
  2. tsunami.
  3. wave height.
  4. wave period.
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