Small Star's Life Cycle
The first stage of a small star's life cycle
Nebula or molecular cloud
The first stage of a large star's life cycle
Nebula or molecular cloud
Nuclear Fusion's purpose
to produce energy within stars
Our main star that is on the Main Sequence
the sun
3 things the HR Diagram tells us:
temperature, luminosity, stellar type, spectral class
The second stage of a small star's life cycle
Main Sequence Star
The second stage of a large star's life cycle
Main Sequence Star
The first element that is used in Nuclear Fusion
Hydrogen
The way Main Sequence Stars produce energy
Nuclear Fusion
Which star has a hotter surface temperature: Betelguese or Sirius B?
Sirius B
The third stage of a small star's life cycle
Red Giant
The third stage of a large star's life cycle
Super Giant
In order to overcome electrostatic repulsion, what is needed? (2)
Extreme Heat and Pressure
How are main sequence stars separated (2 groups)
low mass and high mass
The contents of what makes up a Nebula
gas and dust
The fourth and final stage of a small star's life cycle
White Dwarf
the explosion of a very large star in which the star temporarily gives off up to one billion times more energy than the sun
SuperNova
When is a star considered "dying"?
Once fusion stops
Nuclear Fusion in Main Sequence Stars uses this element to fuse into Helium
Hydrogen
origin of the universe: the universe expanded from a very hot, dense state, and continues to expand and cool today
Big Bang Theory
What force is necessary to balance fusion and keep a star in equilibrium?
gravity
formed from the collapse of stars with significantly more mass, resulting in a region where gravity is so strong that nothing, not even light, can escape
black hole
Process that separates large atomic nuclei into smaller atoms
Fission
The letters of spectral classification for Main Sequence Stars
O,B, A, F, G , K, and M
Our sun's classification
Yellow Dwarf