1. Chapter 3.1graphic organizer
Life Cycle of a star
Chapter 3.1graphic organizer

3. Formation of stars
Nebula: where stars are born
Made of dust and gas

4. Main sequence Longest stage of a stars life
Last as long as the star has enough gas
The size of the star depends on how long they are in this stage

5. Average size stars Red Giants White Dwarfs
When a star uses up its hydrogen
The helium begins to fuse into Carbon
Then the core begins to collapse and the outer layers begin to expand a cool
White Dwarfs
When all the helium is fused up
Fusion stops and shrinks

6. Massive stars Supergiants
Similar Characteristics as a Red Giant, however, the end product is a heavier atom like Iron
When a supergiants core begins to collapse it turns into a violent explosion
Supernova
Only occurs with Gold, Silver, and Uranium
Can be as bright as a galaxy

7. After a supernova
If remains of a supernova is so dense it becomes Neutron Star
Made almost all of Neutrons
More mass that the sun but only a few kilometers in diameter
If the core of remaining is so massive (5X mass of Sun) becomes a Black Hole
So dense light cant even escape
We know they are there because they effect the objects around them