12:3 12:4 Review Question Preview (ID: 56058)
Review For Topic 12 Part 2.
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A large cloud of gas and dust in space
a) protostar
b) supernova
c) nebula
d) black dwarf
a contracting cloud of gas and dust with enough mass to form a star
a) protostar
b) nebula
c) black dwarf
d) super giant
the blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space
a) protostar
b) white-dwarf
c) nebula
d) supergiant
the brilliant explosion of a dying supergiant star
a) supernova
b) nebula
c) big bang
d) big crunch
the brightness of a star as seen from earth
a) pulsar
b) magnitude
c) absolute brightness
d) apparent brightness
the brightness a star would be if it were at a standard distance from Earth
a) apparent brightness
b) pulsar
c) absolute brightness
d) big bang
a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity
a) galaxy
b) universe
c) nebula
d) solar system
all of space and everything in it
a) galaxy
b) univese
c) solar system
d) world
the distance that light travels in one year
a) kilometer
b) mile
c) universal kilometer
d) light-year
the initial explosion that resulted in the formation and expansion of the universe
a) big bang
b) big crunch
c) nebula
d) supernova
a star is formed when gravity causes the gas and dust to become so dense and hot that __ occurs
a) expansion
b) nuclear fusion
c) gravity
d) nebulas
how long do small-mass stars last?
a) 100 billion years
b) 100 million years
c) 200 billion years
d) 200 million years
how long do medium mass stars last?
a) 10 billion years
b) 10 million years
c) 100 billion years
d) 100 million years
how long do large mass stars last?
a) 10 billion years
b) 10 million years
c) 100 billion years
d) 100 million years
what determines the length of a star's life
a) size
b) color
c) mass
d) distance
what determines the brightness of a star?
a) mass and distance
b) distance and color
c) color and temperature
d) temperature and size
what color are the hottest stars?
a) blue
b) orange
c) red
d) green
what color are the coolest stars?
a) blue
b) orange
c) red
d) green
what characteristic is not used to classify a star?
a) color
b) brightness
c) size
d) distance
a spinning neutron star that gives off radio waves
a) nebula
b) pulsar
c) supernova
d) protostar
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