Unit 7: Stars & The Sun Flashcards
1
Q
To break up iron nuclei or fuse them into larger nuclei, what needs to be added?
A
Energy
2
Q
Name all the letters (in order) in the spectral type
A
O, B, A, F, G, K, M
3
Q
The Sun is under which spectral type?
A
G
4
Q
What is pressure the product of?
A
Density and temperature
5
Q
Why are astronomers more interested in the luminosity of a star than its apparent brightness?
A
Luminosity tells us an intrinsic characteristic of the star whereas brightness only tells us how it happens to look on Earth
