OUTCOME
By the end of the lesson you will be able to recognise how a moving source of sound will result in the Doppler effect and be able to describe how Doppler effects are used in ultrasound
Pre-reading quiz p.406-408
The Doppler effect results in wavefronts being compressed as a sound source moves toward the observer and the waves lengths being stretched as the source moves away from the observer
LEARNING TASKS
Explore
Build a model of the Doppler effect and the film the effect of a moving source
Elaborate
Watch this youtube on the use of Doppler in Ultrasound diagnosis
Summarise how Doppler is used in ultrasound
Evaluate
Answer the questions form the text
Qs 10-14