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25 Cards in this Set
- Front
- Back
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What is a white dwarf?
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A small, hot star consisting of a hot, dense core contracting under the force of gravity.
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What is absolute magnitude?
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The actual amount of light a star gives off.
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What is apparent magnitude?
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The amount of a star's light observed on Earth.
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What is parallax?
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The apparent shift in position of an object when viewed from different places; used to determine distances.
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What are constellations?
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Groups of start whose positions in the sky seem to change as Earth moves.
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What is main sequence?
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The classification of about 90% of the stars.
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What is a nebula?
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The earliest stage of a star's formation.
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What is a giant?
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A large, cool expanding star in which helium fuses to form carbon.
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What is a light-year?
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The distance that light travels in one year.
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What is a supergiant?
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A relatively cool star that has expanded to more than 700 times as large as our sun.
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What is a neutron star?
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A star in which only neutrons can exist in its core.
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What is a black hole?
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A object so dense that nothing, including light, can escape it.
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What are sunspots?
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Dark, cooler areas of the Sun's surface.
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What is the chromosphere?
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The layer of the sun's atmosphere above the photosphere.
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What is the corona?
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The outer layer and largest part of the Sun's atmosphere.
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What is a supernova?
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Produced from an explosion that occurs when a star's core collapses.
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What is a binary system?
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Two or more stars revolving around one another.
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What is the photosphere?
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The lowest layer of the Sun's atmosphere that gives off light.
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What is a galaxy?
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A large group of stars, gas, and dust held together by gravity.
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What is the Big Bang Theory?
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An explanation for the beginning of the universe.
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How is the Big Bang theory supported by Doppler Shift?
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Doppler Shift tells us the universe is expanding in all directions.
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Support the statement "the Sun is considered an average star."
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It is average size and mass, in main sequence, yellow.
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Why does the position of some stars appear to change throughout the year?
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Since we are revolving around the Sun, our view of the sky changes.
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Why is matter considered to be recycled when stars die and are born?
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When a star explodes and dies, it reforms into a nebula which forms a new star.
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Be able to describe the life cycle of a star that is similar to the Sun from birth to death.
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