star 2
what is the second stage of a star
protostar
how can you tell the distance of a star
brighter it appears
what is the third stage of a star
main sequence star
what is the fourth stage of a star
giant
what is the first stage of a star
nebula
stars that are blue/white are what
hotter
what does the color of a star determine
temperature
is the sun a star
its a star
why does a star start to die
running low on hydrogen
stars that are cooler are what color
red/orange
what are the two types of brightness
apparent magnitude and absolute magnitude
what is a main sequence star
fusing hydrogen in its core and has a stable balance of outward pressure from core nuclear fusion and gravitational forces pushing inward
what is the 5th stage
dwarf
what is a star
massive celestial object made of plasma
what are the spectral classes
O, B, A, F, G, K, and M