Classifying Stars
Life Cycle of Small to Medium Stars
Life Cycle of Massive Stars
Star Groups
Galaxies
100
the name of the graph that is used to classify stars
What is the Hertzsprung-Russell diagram?
100
the place where stars are born.
What is a nebula?
100
the reason that super giant stars have such a high luminosity.
What is high surface area?
100
a group of stars organized in a recognizale patterns.
What is a constellation?
100
galaxies are bound together by it.
What is gravity?
200
the two factors that are plotted in an H-R diagram.
What is luminosity and temperature?
200
the process in which less-massive atoms combine to become more-massive atoms.
What is nuclear fussion?
200
a large explosion in which energy and stellar material are released and the star is blown apart.
What is a supernova?
200
pairs of stars that revolve around each other.
What are binary stars?
200
the most common type of galaxy.
What is a spiral galaxy?
300
the hottest and brightest stars
What are blue stars?
300
the stage of a star's life cycle that lasts about 10 billion years.
What is the main-sequence stage?
300
a star who's electrons and protons have smashed together under gravity to form neutrons.
What is a neutron star?
300
astronomers estimate that more than ____ of all sunlike stars are part of multiple-star systems.
What is half?
300
a galaxy with an extremely bright center that is circular in shape.
What is an elliptical galaxy?
400
the colors of stars from hottest to coolest.
What is blue, white, yellow, orange, and red?
400
the elements that most stars are made of.
What are hydrogen and helium?
400
a rapidly spinning neutron star that emits pulses of radio and optical energy.
What is a pulsar?
400
when a nebula collapses __________ are formed.
What are globular clusters?
400
the type of galaxy that the milky way is.
What is a spiral galaxy?
500
the band, which extends from cool, dim, red stars at the lower right to hot, bright , blue stars at the upper left of the H-R diagram?
What is the main sequence?
500
a small, hot, dim star that is the leftover center of an old sunlike star.
What is a white dwarf?
500
after a super nova if the leftovers are to massive a _________ may form instead of a neutron star.
What is a black hole?
500
an open cluster is loosely shaped and ususally contains no more than a few _______ stars.
What is hundred?
500
the way in which galaxies that have quasars differ from those that do not.
What is are very bright center?
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