Medical Lesson 3

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