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32 Cards in this Set
- Front
- Back
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Small, hot star consisting of a hot, dense core controlling under the force of gravity
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white dwarf
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actual amount of light a star gives off
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absolute magnitude
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amount of a star's light observed on Earth
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apparent magnitude
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apparent shift in position of an object when viewed from different places; used to determine distances
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parallax
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groups of stars whose positions in the sky seem to change as Earth moves
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constellations
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classification of about 90% of the stars
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main sequence
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earliest stage of a star's formation
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nebula
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large, cool expanding star in which helium fuses to form carbon
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giant
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distance that light travels in one year
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lightyear
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relatively cool star that has expanded to more than 700 times as large as our sun
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supergiant
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star in which only neutrons can exist in its core
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neutron star
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object so dense that nothing, including light, can escape it.
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black hole
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dark, cooler areas of the Sun's surface
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sunspots
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layer of the sun's atmosphere above the photosphere
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chromosphere
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outer layer and largest part of the Sun's atmosphere
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corona
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produced from an explosion that occurs when a star's core collapses
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supernova
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two or more stars revolving around one another
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binary system
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lowest layer of the Dun'd atmosphere that gives off light
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photosphere
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large group or stars, gas, and dust held together by gravity.
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galaxy
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explanation for the beginning of the universe
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Big Bang Theory
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Is the milky way a spiral galaxy
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yes
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Is the milky way an elliptical galaxy
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no
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Is the milky way a member of the Local Group
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Yes
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Is the milky way 100,000 light-years in diameter
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yes
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Is the milky way5.8 million light-years from the galaxy Andromeda
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no
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does the milky way have more than 400 billion stars
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no
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sequence the colors of stars by temperature labeling the hottest star number one
Blue Yello Red |
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2 3 |
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Identify the sequence of the evolution of stars by labeling the stages.
White Dwarf Main Sequence Nebula Giant |
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2 1 3 |
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How is the sun different from other stars? How is the Sun similar?
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Our sun is not in a binary system unlike some stars, but it is a main sequence star and is an enormous ball of gas like most stars.
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How is the Big Bang Theory supported by the observed Doppler shift of galaxies?
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It is supported, because the theory is that the galaxy is also expanding, and the Doppler helps show what is moving away.
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How does the Sun produce energy?
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Using fusion by hydrogen into helium in its core
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How are sunspots, flares, and prominences related?
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The intense magnetic fields associated with sun spots might cause prominences, which are huge, arching columns of gas
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