Life Cycle of a Star
- Created by: PhoenixWillow
- Created on: 09-05-15 08:46
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- Life Cycle of a Star
- Protostar
- Dust and gas is pulled together and become more concentrated
- Main Sequence Star
- Red Giant
- White Dwarf
- Black Dwarf
- The star goes cold and fades out.
- No lighter elements, so fusion stops. The forces are no longer balanced and gravity takes over. The core begins to relax and get hot.
- Black Dwarf
- The surface cools and helium and other light elements fuse together. Elements larger than iron cannot be formed.
- White Dwarf
- Red Super Giant
- Supernova
- Neutron Star
- After the explosion, a dense core is left behind.
- Black Hole
- If the core is really dense, it has such a high field of gravity that not even light can escape from.
- When the core collapses, the core becomes compressed, and it explodes.
- It is hot enough for large nuclei to fuse together, making heavier elements, which are then scattered into space by the explosion
- Neutron Star
- A large star will swell up at this stage. It will then begin to collapse.
- Supernova
- Gravity causes the core to become denser, eventually it is hot enough for hydrogen to fuse together to make helium.
- The star is stable, because the inwards force of gravity is balanced by the outwards forces of the radiation frokm the nuclear reaction
- It will stay stable for a long time because there is lots of hydrogen available.
- Red Giant
- Protostar
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