Science test- STARS Flashcards
Fusion
When 2 smaller atoms are forced together to become on larger atom.
Difference between alive and dead stars
Alive stars are still fusing. Dead stars are not
Nebula
A cloud of space dust mostly hydrogen and helium
Small mass main sequence star
Fishing hydrogen into helium. 90% of its life
Red giant
Fusing helium into carbon
White dwarf
Left over core of a dead star
High mass sequence star
Fusing helium. 90% of its shorter life
Red super giant
Fuses heavier and heavier element up till iron
Super nova
Huge explosion caused by fusing iron in the core robbing it out of energy and it collapses and explodes making all elements heavier than iron
Neutron Star
Super massive ball of just neutrons
Black hole
A super dense area with extreme gravity
The 2 forces balanced in a star
Gravity pulling and fusion pushing out
What element are most stars made out of
Hydrogen
How do star get their energy
By fusing hydrogen and helium
What does a star form
Nebula(a collection of elements or gas some times called dust)
Why don’t large stars last as long as small stars
They fuse the elements they have much faster than small stars due to the increased gravity and increased pushing against the gravity
Where are heavy atoms made
Atoms heavier than iron can only be made in super nova. This they are all made in super nova
What is left behind after a super nova
Depending on the mass of the original star either a neutron star or a black hole
What elements do low mass stars produce
Turns hydrogen into helium up to carbon nitrogen and oxygen
What elements do high mass stars produce during their life
Heavier elements up to iron so carbon, nitrogen, oxygen, silicon, and all in between up until iron
What event causes high mass stars to produce more types of elements
When a star fuses iron it will explode with a super nova and produce all elements heavier than iron. It will also send its material out into other nebula
How are we made out of stars
All elements heavier than helium are made inside stars. We are made out of those types of atoms therefore we are made out of star stuff
Mr Meyers favorite fact
Supernova spread out those heavier elements they “seed” with other nebula with heavier elem which then form new stars and planets
