Transcript Chapter 15 Review

Welcome to...
A Game of X’s and O’s
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Scoreboard
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X
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O
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Click Here if
X Wins
Click Here if
O Wins
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The color of the star depends on its?
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temperature
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What can a scientist learn about a star from its spectrum?
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Composition and temperature
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What color are the hottest stars?
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blue
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Why is the actual motion of stars so difficult to see?
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They are too far from earth
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A small hot star near the end of its life is a type of star called?
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White dwarf
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As gravity pulls gas and dust into a sphere that becomes denser
and hotter a sun like star begins to form and is called..?
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protostar
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What type of star would be shown at the lower right end of the
main sequence on the H-R diagram?
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Red dwarf
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Where are globular clusters found?
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In a spherical halo of spiritual galaxies and near elliptical
galaxies
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How do scientists tell if a star is cold or hot?
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Its color
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