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Life Cycle of a Star
To help study for Star Test
17
Science
8th Grade
02/14/2013

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Cards

Term
nuclear fusion
Definition
A star is born when--
Term
nebula
Definition
The gas and dust that is the origin of all star--
Term
gravity
Definition
The force that pulls the matter in a nebula--
Term
mass
Definition
The lifetime of a star depends on its--
Term
supernova
Definition
An explosion of a giant or supergiant--
Term
giant, red giant or supergiant
Definition
The stage at which a star begins to run out of fuel.
Term
Black Holes
Definition
The remains of a collapsed star with a mass greater than 40 times that of the sun.
Term
black dwarf
Definition
The remains when a white dwarf runs completely out of fuel and no longer glows.
Term
Light-year
Definition
A measure of distance in accordance to the distance light travels in a year.
Term
size, brightness, and temperature
Definition
The three ways in which we classify stars.
Term
Spiral Galaxy
Definition
The Milky Way is what type of galaxy?
Term
The Big Bang Theory
Definition
The fact that all galaxies are moving away from each other leads to what astronomers call--
Term
main sequence star
Definition
The stage of the life-cycle of a star when gravity and nuclear fusion are in equilibrium--
Term
protostar
Definition
the stage at which gravity pulls nebula together and nuclear fusion begins--
Term
planetary nebula
Definition
when the core of a low mass star collapse and gasses are released into the universe--
Term
gravity and nuclear fusion
Definition
What two forces are needed in order for a star to form--
Term
spiral, irregular and elliptical
Definition
What are the 3 major types of galaxies in our universe?
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