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Type: Multiple-Choice
Category: Waves and Sound
Level: Grade 7
Author: roorichard
Created: 3 years ago

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Waves and Sound Question

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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.