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18 Cards in this Set
- Front
- Back
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The most important star to the earth.
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sun
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How does the sun benefit the earth?
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provides light, heat and energy that we need to survive.
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How far away is the sun from the earth?
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93 million miles
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What is the hottest region of the son?
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the core
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The sun's visible surface is called the
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photosphere
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What are the dark patches on the sun's surface caused by the sun's magnetic field?
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sunspots
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loops of cool gas erupting far from the chromosphere
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solar prominences
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How are the solar prominences suspended in space?
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by the sun's magnetic field
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Tremendous bursts of energy caused by sudden changes in the sun's magnetic field
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solar flares
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the hottest region of the sun's atmosphere; it extends hundreds of thousands of miles from the sun's surface . . .
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colossal corona
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A faint wind of high speed gas particles that stream into space from the sun's corona
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solar wind
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What unit is used to measure great distances
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light year
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a group of two stars that circle around each other
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binary star
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the violent explosion of a star
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super nova
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absolute magnitude
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the actual brightness of a star; depends on the amount of light it produces no it's distance
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apparent magnitude
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the apparent brightness of a star that depends on:
1. actual brightness 2. distance from earth |
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magnitude
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the lower the number the brighter the star
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occurs when a star flares up many times than it's normal brightness
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nova
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