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| observed patterns in the night skys |
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| is a star with the same ammount of light it gives off |
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| light received on earth is the apparent magnitude |
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| is the distance r=that light travels in one year |
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| lowest layer of suns atmosphere and the layer from wich light is given off |
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| above photosphere layer extends upward about 200km above the photoshpere |
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| The largest layer of the suns atmposphere |
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| areas of the sun that appear darker because they are cooler |
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| stars begin as a large cloud of gas |
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| in the late stage of life cycle a star is called a giant |
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| At this stage in a star's evolution it becomes a white dwarf |
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| Heavier and heavier elemants from by fusion and the star expands into a super giant |
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| neutrons can only exist in a dense core |
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| light cannot escape the region |
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| a large group of stars gas and dust held together by gravity |
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| the theory of the formation of the universe |
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| How many stars does the Milky Way hold |
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| wavelenghths of weight are compressed, just as the sound waves from the train's whistle are |
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| True or False Absolute mag is the ammount of light being given off by a starh |
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| hydrogen fuses into helium energy |
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| Polaris nickname is north star true or false |
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| T/F Hot dense core stage is white dwarf |
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| T/F star expands and cools is a giant |
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| T/F a supergiants stage is formed by heavier and heavier elements by fusion |
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| T/F the gravity from the black hole can see light and can escape |
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| T/F a galaxy is not a group of stars |
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