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100
the distance that light travels in a year is called
What is a lightyear
100
The lifetime of a star depends on this
What is mass
100
groups of two or more stars are called..
What is star system
100
the galaxy characterized by a pinwheel shape
What is spiral
100
A star system has at least __________ stars in it
What is 2
200
this is used to determine a stars distance from earth
What is a parallax
200
This is what determines if a protostar becomes a star
What is surface temperature
200
the explosion of a dying HIGH-MASS star is called
What is supernove
200
our solar system is located in the __________ galaxy
What is milky way
200
The brightness that a star is seen from earth is called
What is apparent brightness
300
this is the color of the coolest stars
What is red
300
this is the color of the hottest stars
What is blue/white
300
a galaxy that does not have a regular shape
What is irregular
300
The sun is part of a ____________ type of galaxy (i.e. spiral, elliptical, or irregular)
What is spiral
300
Where the suns energy comes from
What is nuclear fusion
400
This starts when a new star is born
What is nucleur fusion
400
this is the range that a star can live for
What is 10 million to 200 billion years
400
the most massive stars collapse to form...
What is blackholes
400
The remains of a star that has no fuel but glows faintly is called...
What is white dwarf
400
a graph used by astronomers for star temperature and brightness
What is Hertzsprung-Russel diagram
500
These are the 3 characteristics used to classify stars
What is size, brightness and temperature
500
binary star system is called..
What is an eclipsing binary
500
the large cloud of gas and dust where all stars begin from
What is nebula
500
when galaxies are moving away from each other
What is expanding
500
list the 3 layers of the sun in order
What is photosphere, chromosphere and corona
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