Topic 8 - Classifying Stars (Paper 2) Flashcards
1
Q
what does a stars brightness depend on?
A
its size and temperature
2
Q
the larger and hotter the star…
A
the brighter it is
3
Q
why is classifying stars from earth difficult?`
A
the closer the star, the brighter it will be
4
Q
what is absolute magnitude?
A
a measure of how bright a star is if it were a fixed distance from earth
5
Q
what is a hertzsprung-russel diagram?
A
a graph of absolute magnitude against temperature
