the doppler effect. Flashcards
1
Q
how do wave fronts spread when an object emits waves?
A
the wavefronts spread out symmetrically.
2
Q
what happens when a wave source moves?
A
the waves in the front get squashed together, and the waves in the back get stretched out.
3
Q
when a source moves, what happens to the wave length and frequency of the waves?
A
the wavelength of the waves in front of the source decreases and the frequency increases. and the wave length behind the source increases and the frequency decreases.
4
Q
what is the doppler effect.
A
when the wavelength of the waves in front of the source decreases and the frequency increases. and the wave length behind the source increases and the frequency decreases.
