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18 Cards in this Set
- Front
- Back
Aurora
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sheets of colored light produced by a magnetic storm in the earth's upper atmosphere.
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Chromosphere
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thin layer of the sun's atmosphere that lies above the photosphere and glows with a redish light; color sphere.
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Convective Zone
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region around the sun's radiative zone in which moving gases transfer energy.
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Corona
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outermost layer of the sun's atmosphere; crown.
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moon
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body that is smaller than a planet and orbits the planet.
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Nebular theory
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theory that the sun and the planets condensed out of a spinninng cloud of dust and gas.
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Photosphere
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innermost layer of the solar atmosphere; light sphere.
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Planet
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any one of the nine major bodies that orbit the sun.
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planetesimal
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samll body of matter that formed in the outer regions of the solar nebula while the sun was still forming in it's center.
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prominence
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cloud of glowing gases that arches high above the sun's surface.
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protoplanet
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large body of matter that formed from the coalescence of planetesimals in the solar nebula.
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radiative zone
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region surronding the core of the sun in which energy is transferred in the form of electromagnetic waves.
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solar flare
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sudden, violent eruption of electrically charged atomic particales from the sun's surface.
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solar nebula
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cloud of gas and dust that developed into the solar system
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solar system
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the sun and the bodies that revolve around it.
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solar wind
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electrically charged atomic particles that stream out into space through holes in the sun's corona.
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sunspot
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cool, dark area of gas within the photosphere caused by powerful magnetic fields.
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sunspot cycle
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periodic variation in the number of sunspots that occurs approximately every 11 years.
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