Spectra moved towards th red endstarts moving awaywave length

is the change in frequency of a wave for an observer moving relative to the source of the waves. It is commonly heard when a vehicle sounding a siren approaches, passes and recedes from an observer.

The distance that light travels in a year

Located or found in one of the Polar Regions.

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earth scince vocab

Vocabulary for Units

Question	Answer
Radiowaves
Radiotelescopes
Continuous spectra
Red Shift	Spectra moved towards th red endstarts moving awaywave length
Blue Shift	moves into the blue
Doppler Effect	is the change in frequency of a wave for an observer moving relative to the source of the waves. It is commonly heard when a vehicle sounding a siren approaches, passes and recedes from an observer.
Light Year	The distance that light travels in a year
Circumpolar	Located or found in one of the Polar Regions.
Apparent Magnitud