lesson 11a: absorption lines + doppler effect
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9 Terms
what is an orbital
the rings around an atom nucleus that electrons can reside on
how do electrons jump orbitals?
by absorbing the energy from photons
what causes absorption lines?
a photon of a certain wavelength (colour) being absorbed by an electron
what can an object’s spectrum show us?
the temperature of the object, the elemental composition, the speed of the object
what is the doppler effect?
light ripples that form when an object is moving that are closer together in front of the object and farther apart behind the object
what else besides light is impacted by the doppler effect?
sound
when is an object blueshifted? when is it redshifted?
when an object is moving towards you it is blueshifted (higher frequency waves) and when it is moving away it is redshifted (lower frequency waves)
what is the biggest factor in how dramatic the red/blueshift is?
speed (faster = more dramatic)
is the galaxy in general red or blueshifted?
redshifted