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Physics Gcse Aqa unit 1

Could someone explain the Doppler effect please???? Xx
Thanks
change in the observed wavelength and frequency of a wave due to it's source of motion - I think
Original post by EmmanuellaUwaifo
Could someone explain the Doppler effect please???? Xx
Thanks

When a wave source (anything that emits any type of waves) moves towards the observer, the wavelengths are compressed. Consequently, this causes the waves to have a shorter wavelength, and therefore a higher frequency. As a result of this, (if it is sound waves) the pitch of the sound is higher since the frequency is higher.

When a wave source moves away from the observer, the wavelengths are stretched. Consequently, this causes the waves to have a longer wavelength, and therefore a lower frequency. As a result of this, (if it is sound waves) the pitch of the sound is lower due to the frequency being lower.

Hope this helps :smile:
Stuff Coming towards you seems to have a higher frequency (and therefore shorter wavelength). Stuff moving away from you seems to have longer wavelengths and lower frequencies.

Simple as.
Who's done the p1 aqa paper and knows what's coming up today
Start a mark scheme here?
Original post by lukman200
Start a mark scheme here?


Yeah sure!!!
My exam finishes at 3:00. 3:30 we commence the grouping of ideas ??
Can anyone also explain kilowatt hours please

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