Doppler effect and red shift Flashcards
1
Q
the Doppler effect/doppler shift
A
the change in wavelength caused by a relative motion between the wave source and an observer
2
Q
red shift
A
the apparent increase in wavelength of electromagnetic radiation caused when the source is moving away, relative to the observer.
3
Q
hubbles law
A
states that the recessional velocity of a galaxy is directly proportional to its distance from the earth
4
Q
example of Doppler effect
A
when fire engine goes past the frequency changes.
as it goes towards you the pitch will sound higher and then as it goes away from you it will be the pitch will be lower
