How Stars Form
What does the space around Stars contain?
Gas and Dust
Where do stars spend 90% of their lives
on the main sequence
How much bigger can low mass and medium mass stars be compared to the sun?
8x bigger
What are high mass stars?
Stars with mass eight times more than the sun
what does a nebula turn into?
protostar
What happens as a protostar contracts?
its internal pressure and temperature continue to rise.
What does a stars mass determine?
The stars place on the main sequence and how long it will stay there
What do low mass and medium mass stars eventually turn into?
white dwarfs
Why does a high mass star dye quickly?
consumes fuel very rapidly
what does the protostar turn into?
Main sequence star
What is a protostar?
A contracting cloud of gas and dust with enough mass to form a star.
What is the estimate surface temperature of a yellow star?
6000k
why would a low mass and medium mass star collapse?
there is less outward pressure which supports the star against gravities inward pull.
What happens when gravity overcomes the lower pressure?
leads to a dramatic collapse of the stars outer layers
What does the Neutron star turn into?
Black hole
what is a nebula?
Large cloud of gas and dust spread out over a large volume of space.
What is the estimated time a yellow star will remain on the main sequence?
about 10 billion years
what general color is a planetary nebula
red
what does the collapse of a high mass star produce
supernova
What does a supernova turn into?
Neutron star
How is a star formed?
When contracting cloud of gas and dust becomes so dense and hot that nuclear fusion begins
What determines the mass of each young star?
The amount of gas and dust available when a star forms
what is the glowing cloud of gas that surrounds a dying star?
planetary nebula
What is a Supernova?
A explosion so violent that the dying stars become more brilliant than the entire galaxy
What does a Planetary Nebula turn into?
white dwarf