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knipp - sun & stars
chapter 25 - sun and stars
29
Astronomy
7th Grade
03/09/2010

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Cards

Term
patterns of stars in the night sky
Definition
constellations
Term
the amount of light that a star actually gives off
Definition
absolute magnitude
Term
the amount of light received on Earth
Definition
apparent magnitude
Term
distance light travels in a year
Definition
light-year
Term
innermost layer of the Sun's atmosphere
Definition
photosphere
Term
middle layer of the Sun's atmosphere
Definition
chromosphere
Term
outermost layer of the Sun's atmosphere
Definition
corona
Term
where hydrogen fusion into helium occurs
Definition
core
Term
dark, cooler areas of the Sun's surface
Definition
sunspots
Term
huge, arching columns of gas from the Sun's surface
Definition
prominences
Term
gas eruptions that shoot out rapidly
Definition
solar flares
Term
cause auroras
Definition
CME's
Term
large cloud of gas and dust - start of a star
Definition
nebula
Term
process by which stars get their energy
Definition
hydrogen fusion into helium
Term
a high-mass, main sequence star will eventually use up its fuel and turn into a ...
Definition
red supergiant
Term
a low-mass, main sequence star will next turn into a ...
Definition
red giant
Term
a red giant uses up its helium, loses its outer layers and turns into...
Definition
a white dwarf
Term
a red supergiant uses up its fuel, it collapses violently to form a...
Definition
supernova
Term
a large red supergiant will eventually turn into a ...
Definition
black hole
Term
a smaller red supergiant will eventually turn into a...
Definition
neutron star
Term
a star that is so dense that light cannot escape is a ...
Definition
black hole
Term
a group of stars held together by gravity
Definition
galaxy
Term
the name of the galaxy that contains our solar system
Definition
the Milky Way
Term
the leading theory about the formation of our universe
Definition
the Big Bang theory
Term
according to this theory, 13.7 billion years ago the universe began with an enormous explosion
Definition
the Big Bang theory
Term
T/F Our star is a yellow, main sequence star.
Definition
true
Term
T/F Sunspots are permanent features on the Sun.
Definition
false
Term
T/F The Sun's light takes about 8 minutes to reach the Earth.
Definition
true
Term
T/F The hottest stars are red in color.
Definition
false - they are blue or white
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