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2 Cards in this Set
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Doppler effect-an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.
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Photosphere- is the luminous envelope of a star from which its light and heat radiate.
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Chromosphere- areddish gaseous layer immediately above the photosphere of the sun or another star. Together with the corona, it constitutes the star's outer atmosphere.
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Corona the rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon.
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