Please enable JavaScript.
Coggle requires JavaScript to display documents.
Life Cycle Of Stars - Coggle Diagram
Life Cycle Of Stars
Stellar Nebula- a cloud of dust and hydrogen gas
gravity over millions of years causes the Nebula to spiral together, the particles in the nebula move faster and eventually reach temperatures of millions of degrees
Protostar- a star formed when it is hot enough for hydrogen nuclei to fuse to form helium
Now the star enters a stable period where the outward pressure of the heat generated by nuclear fusion counteracts the force of gravity
Main Sequence star- stays stable for between 10 million and 10 billion years
Massive star
The star expands
Super red Giant- now full of all the elements up to iron
fusion stops resulting in the collapse of the super red giant the shock wave created triggers an explosion
1 more item...
Small star
nuclear fusion up until now has been ocurring between hydrogen nuclei, but eventually the hydrogen runs out (outward force of fusion is less than inward force of gravity)
The star collapses inwards, and the temperature increases- its so hot that helium nuclei fuse together forming heavier elements (as far as iron) to do this we need input of energy
Now the star expands
1 more item...