9.5 is an extension of SL Core Topic 4.
The Doppler effect describes the phenomenon
wavelength/frequency shift when relative
between a source of waves & an observer.
of science - Technology: Although originally based
physical observations of the pitch of fast moving
of sound, the Doppler effect has an important
in many different areas such as evidence for
expansion of the universe and generating images
in weather reports and in medicine scans.
AHL 9.5 The Doppler Effect [slide 2]
The Doppler effect for sound waves and light waves
the Doppler effect when there
relative motion between source and observer.
situations where the Doppler effect can be utilized.
the change in frequency or wavelength
due to the Doppler effect to determine
velocity of the source/observer.
AHL 9.5 The Doppler Effect [slide 3]
Data Booklet Equations:
Moving source: f ’ = f
[ v /
(v ± uS) ]
Moving observer: f ’ = f
[ (v ± uO) / v
= ∆ lambda/ lambda = v / c
Caption: : Slound Waves for Stationary and Moving Sources of Sound
AHL 9.5 The Doppler Effect [slide 4]
CLICK ON THIS LINK TO EXPLORE THE DOPPLER EFFECT.THIS TEXT IS A LINK TO ANOTHER DOPPLER EFFECT SIM.ONE MORE LINK TO A DOPPLER EFFECT SIMULATION.PLAY WITH AT LEAST TWO OF THE SIMS AND SEE WHAT YOU CAN LEARN ABOUT THE DOPPLER EFFECT. RECORD SOME SHORT NOTES ABOUT YOUR FINDINGS IN YOUR PHYSICS NOTEBOOK.
AHL 9.5 The Doppler Effect [slide 5]
Think carefully about what you have learned from exploring the simulation (link on slide 4), then follow the links and answer the Quiz questions on the right of this slide.. NOTE:1. You must submit your answers to the questions by 8.30 a.m. Monday 11/07/2016. 2. You can have 2 attempts to get each question correct, by completing the quiz a second time.