The Doppler Effect: Formula & Calculation


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How did the Doppler Effect show astronomers that the universe was expanding?

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1. Which of these is a true statement about the Doppler Effect?

2. Hiran is standing beside the road when he hears a bird flying AWAY from him and chirping. The bird's chirp has a frequency of 1800 Hz, and the bird is flying away from him at 6 m/s. What frequency does Hiran hear?

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About This Quiz & Worksheet

Use this worksheet/quiz to find out what you know about calculating the Doppler Effect. You'll be quizzed on key points like the expansion of the universe and how the Doppler Effect was used to identify it.

Quiz & Worksheet Goals

Quiz questions will address the following:

  • How to calculate frequency with a bird chirping as it is flying at you
  • Calculating that frequency when the bird is flying away from you
  • The frequency of a stationary whistle when you've been given the speed of sound in air

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related lesson on calculating the Doppler Effect
  • Problem solving - use acquired knowledge to solve frequency practice problems
  • Making connections - use understanding of the concept of the Doppler Effect and how it's connected to the discovery that the universe is expanding

Additional Learning

Study questions in the lesson entitled The Doppler Effect: Formula & Calculation will teach you about the following:

  • An example of the Doppler Effect and how it works
  • The movement of sound waves
  • How light waves are affected by the Doppler Effect