In the physics classroom this week we learned all about sound waves. In this unit of sound waves a large topic was the Doppler effect. The Doppler effect can be observed whenever the source creating waves is moving relative to an observer. The Doppler effect is often defined as the effect created by a moving source of waves in which there is an increase in frequency for observers who are being approached by the source and a decrease in frequency for observers from whom the source is receding. I know that is a lot of information in just one section, but I will insert a diagram used in class to help you understand what exactly is going on.
So I inserted this image from google to further help you understand what exactly the Doppler effect is. This diagram is pretty self-explanatory as to how it works and what it is. If a moving object is moving away from you the sound waves being emitted will reach you with low frequency and long wavelengths. As opposed to someone who is standing in front of the moving object as it moves towards you. The sound waves they receive will have high frequency and small wavelengths.
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