Star Birth
Which is more dense, a nebula or a star?
A star is more dense than a nebula.
What happens when a star runs out of fuel?
The star dies.
Name two examples of what can happen after a supernova.
1-Black Hole 2-Neutron star
Average mass stars begin their lives in what?
A stellar nebula.
What are stars made out of?
Elements
What is a nebula?
A place where planets and stars are created.
What can escape a black hole?
Nothing can escape a black hole.
What causes a supernova?
A supernova is caused when a supergiant star runs out of fuel and explodes.
What is a planetary nebula?
A ring-shaped nebula formed by an expanding shell of gas around a old star formed by the death of an average mass star.
Do black holes have gravity?
Yes, they have immense amounts of gravity.
What chemical is made when hydrogen and atoms combine?
The chemical that is created is helium.
What does a star's mass have to do with its lifespan?
A star with less mass lives longer than a star with more mass.
What is a black hole?
A dead super giant that has a huge amount of gravity and eats anything in its path.
The longest stage of life for an average mass star is what?
Stage 2, the main sequence. This is true for all stars.
Which stars can create elements larger than atomic #26?
Large and Very Large Mass stars
What is a star called when it is just starting to form, but it hasn't gone through nuclear fusion yet?
It is called a protostar.
What happens to a supergiant star after it dies?
It explodes into a supernova.
What is a neutron star?
A neutron star is the extremely dense star that remains after a super giant's death. It also spins extremely fast.
How long will an average mass star live before reaching dwarf stage?
10 billion years.
What is nuclear fusion?
Nuclear fusion is the process by which atoms combine to form heavier atoms.
DAILY DOUBLE Which mass of star lives the shortest period of time? Why?
Very large mass stars live the shortest period of time. They burn through their fuel the fastest.
What size star has the coolest temperature in the final stage of it's life?
Average mass star.
About how long does a supergiant star’s life last?
About 10 million years.
Describe the temperature change in an average mass star as it ages.
It gets hotter through stages 1-3 and then cools in stage 4.
Name the final life stage for average mass, large mass, and very large mass stars.
White Dwarf, Neutron Star, Black Hole