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15 Cards in this Set
- Front
- Back
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A group of stars that form a pattern of a PERSON, ANIMAL, or THING
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Constellation
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A star that "doesn't move" in the sky, the constellation used to find it
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Polaris,
Big Dipper |
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A telescope using a lens,
A telescope using a mirror |
Refracting,
Reflecting |
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Something that seperates light into bands of color
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Spectroscope
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4 things this instrument (S) tells us about stars
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Make-up, direction of movement, speed, distance
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2 units astronomers use to measure distance
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Light years, parsec
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3 ways astronomers measure distance in space
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Spectroscope, Cephid Variables, parallex
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Comparitive brightness as seen by the observer/seen from the same distance/true brightness
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Apparent,
Absolute, Luminosity |
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True brightness depends on
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Heat and size
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The color of a star can tell the stars
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Heat
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In the HR diagram most stars are in the
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Main Sequence
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Stars that are hot but not bright and stars that are cool but bright
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Red Giant,
White Dwarf |
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The life-time of a star depends on its
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Mass
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The end of the life of a massive star when it explodes and a very massive star after the explosin
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Supernova,
Black Hole |
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A variable star that expands and contracts and a nuetron star that sends radio waves
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PulsaTING,
PulsaR |
