An example of doppler effect is a train sounding its horn travelling pas an observer. The note heard by an observer changes pitch (frequency).
The Doppler effect is the difference in the observed and emitted frequencies of a wave source because there is relative motion between the wave source and the observer.
3 minutes
TED-Ed - 6 minutes
Define the term 'apparent wavelength'.
Compare the apparent and source wavelengths when a moving source approaches an observer.
Compare the apparent and source wavelengths when a moving source moves away from an observer.
Describe the conditions necessary for the apparent and source wavelengths to be equal for a moving source.
Explain the Doppler Effect.
Solve Doppler Effect problems that involve apparent frequency, apparent wavelength and the velocity of the wave.
Solve Doppler Effect problems that involve apparent frequency, apparent wavelength, the velocity of the wave and the velocity of the source.
Explain how having a source approach an observer affects the detected (apparent) frequency.
Explain how having a source move away from an observer affects the detected (apparent) frequency.
Solve problems that involve both beats and the Doppler Effect.
Sketch and label frequency time graphs for sources that are moving directly at an observer.
Sketch and label frequency time graphs for sources that are moving past an offset observer.
Explain why the apparent frequency gradually varies when a source is moving past an offset observer.
Discuss how the apparent frequency, detected by an independent observer, varies as a source is rotated in a circular motion.
Explain the concepts of Doppler redshift, Doppler blueshift and sonic booms.