Stars, Absolute Magnitude And Temperature: Question Preview (ID: 23856)

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The Hertzsprung-Russell diagram shows the relationship between a stars:
a) temperature and magnetic field b) solar flares and prominence's c) absolute magnitude and temperature d) magnetic field and solar flares
Most stars, ninety percent, on the Hertzsprung-Russell diagram are:
a) main-sequence stars b) red giants c) white dwarfs d) supergiants
Main-sequence stars that have the highest temperatures are the:
a) smallest b) dimmest c) largest d) brightest
Main-sequence stars that have the lowest temperatures are the:
a) smallest b) dimmest c) largest d) brightest
The brightness of a main-sequence star is related to its:
a) size b) density c) weight d) mass
How much more massive are the hottest blue stars when compared to our Sun?
a) 25 b) 50 c) 75 d) 100
How massive are the coolest red stars when compared to our Sun?
a) 1/10 b) 1/100 c) 1/1000 d) 1
The size of red giants can be estimated by comparing them with stars of known size and that have the same:
a) core temperature b) surface temperature c) atmospheric temperature d) dark side temperature
Any difference in the brightness of two stars having the same surface temperature is due to their relative:
a) orbits b) densities c) masses d) sizes
The size of a white dwarf star can be compared to the size of:
a) Earth b) Jupiter c) Saturn d) Neptune
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