MOD2 - ATOMS Flashcards
Identify the parts of the element symbol
Na - 23, +, 11
Na - Symbol, 23 - Mass number, + - charge, 11 - atomic number
What is stellar evolution?
Life cycle of a star. From protostar to stellar death.
Life cycle of an average star
Stellar Nebula»_space; Average Star»_space; Red Giant»_space; Planetary Nebula»_space; White Dwarf
Life of a Massive star
Planetary Nebula»_space; Massive Star»_space; Super Red Giant»_space; Supernova»_space; Neutron Star or Black Hole
Where do stars from?
From the densest region
Where do Star Nebulla form?
From coalescing gases
Nebula’s gravity compresses in on itself, then it causes a part to break off. What happens to the broken off part?
It will become the cental ball of superhot gas, a Protostar
What happens to the leftover gases of the nebula?
Will be used by the protostar to go into the next stage, the main sequence.
What is Proton-Proton Fusion?
A part of the process of the Main Sequence. The protostar will eventually reach a core temp of 100 million kelvin.
Mature Star
What is Nuclear Fusion
It is when two ligther nuclei combine together to form a one heavier nuclei. This nuclei will release tremendous amount of energy.
What happens when a star uses up its H?
H will turn to He, releasing energy. The star will keep turning all its H to He until no H remains to its core. The star will either go average or massive, depending on its mass.
Red Giant: Using up all Elements
What will happen once the core reach to 100 million Kelvin?
Triple Alpha Process begins, fusing He to C.
Mature Star: Red Giant
How does Planetary Nebula form?
Red Giant will expel a large quantity of gas and dust known as Planetary nebula.
What does the Planetary Nebula contain of?
He, C, N, O, Ne, and small amount of heavier elements.
Does the Super Giant create more elements?
Yes or No
Yes
