Shared Flashcard Set

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ch.2d
solar systam
10
Science
5th Grade
01/13/2010

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Cards

Term
photosphere
Definition
the visble surface of the sun
Term
corona
Definition
the sun's atmosphere
Term
sunspot
Definition
a dark spot on the photosphere
Term
solar flare
Definition
a brief burst of energy from the sun's photosphere
Term
solar wind
Definition
a fast moving stream of particles thrown into space by solar flares
Term
magnitual
Definition
brightness of stars
Term
main squence
Definition
a land of stars that includes most stars of average color,size,magnitude,and temperture
Term
universe
Definition
everything that exists-planets,stars,dust,glass,and energy
Term
galaxy
Definition
a group of stars gas and dust
Term
light year
Definition
the distance light travels in one earth year;about 9.5 trillon km
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