What are Stars Flashcards
1
Q
how stars generate energy
A
Nuclear fusion at the core and the creation of heavier elements
2
Q
hydrostatic equilibrium
A
Outward pressure from nuclear fusion balances inward pressure of gravitation
3
Q
What is a Star
A
A luminous ball of gas held together by gravity with
nuclear fusion reaction at the core which provide
energy and support the star against gravity collapse
4
Q
Properties of a Star
A
Luminosity
- Distance
- Brightness
Color
- Temperature
Other properties
- Mass
- Radius
5
Q
Hertzsprung-Russell (H-R) Diagram
A
Stars at the main
sequence are the
zero-age star
Then it evolves off
track depending on
its mass and fusion
process
