Star Basics
The name for a huge cloud of gas and dust where stars are born
Nebula
Our Sun will evenntually turn into this type of star
Red Giant
These two factors are compared on the H–R diagram
Temperature and brightness (luminosity)
This is a region of space with extremely strong gravity, so intense that nothing, not even light, can escape it
Black Hole
This color of stars are the hottest
Blue
This process powers stars by turning hydrogen into helium?
Nuclear Fusion
The type of star is our Sun currently
Main sequence star
This is the place where the hottest stars are located on the H–R diagram
Far left
The term for the total energy a star gives off per second, or its brightness
Luminosity
This color of stars are the coolest
Red
This force keeps a star together against the pressure from fusion
Gravity
This happens when a high-mass star runs out of fuel
It explodes in a supernova
These type of stars make up most of the H–R diagram’s diagonal band
Main sequence stars
“Main sequence” stars are ______ hydrogen into helium
Fuse
Which star is hotter, a yellow star or an orange star?
Yellow
This determines how long a star lives
Mass/Size
These are the possible end stages of a high-mass star
Neutron star or black hole
Red giants are found here on the HR diagram
Upper right
The measure of how hot a star’s surface is
Surface temp
What happens to a star’s brightness as it becomes a red gian
It becomes much brighter even though it’s cooler
This color of stars is known as the hottest
Blue
This stage comes after a low-mass red giant sheds its outer layers
White dwarf
These are located in the lower left corner of the diagram
White dwarfs
A “supernova” is ---
A massive explosion when a large star dies
If two stars are the same temperature but one is much larger, which is brighter?
The larger one