1. Made mostly of hydrogen
What is a Star???
Made mostly of hydrogen
Huge spheres of glowing gas
Gives brightness
Produce energy through process
of nuclear fusion

2. How are stars classified?
Color & Temperature
Size
Composition
(Make-up)
Brightness
(Depends on size & Temperature)

3. Function of a Star Hot Stars Cool Stars It fuses hydrogen into helium
Not for a
long time
Burns fast
& hot
Burns
slow
It fuses hydrogen
into helium
Lasts
long

4. How does a star shine??? High Mass Star Low Mass Star
Radiates energy from nuclear reactions
When it runs out of fuel, it dies & becomes compact
High Mass Star
Low Mass Star
Evolve faster & die sooner
Die quietly
Die in Big explosions!!!!!!

5. Birth/Life/Death of a Star
universe-works-a-star-is-born

6. On-line Lessons: The Birth and Death of Stars
White Dwarf and Planetary Nebula
Collapsing cloud
Sun-like stars
A new star
Supernova Remnant and Neutron Star
Red Giant
Massive stars
Birth and Death of Stars - Summary

7. Hertzsprung-Russell Diagram