Question

How is a star's emission spectrum used to study stars?

A star's emission spectrum tells how hot a star is.

A star's emission spectrum tells what atoms make up the star.

A star's emission spectrum tells how far a star is from Earth.

A star's emission spectrum tells the star's location in the sky.

Answer 1

I think its either the first or second one.

Answer 2

For my final guess after doing some brief research. I think its the second option

Answer 3

You can get the temperature from emission lines, but only the outer ,tatmosphere and/or surroundings - the kind of star might be determined
And you can see what elements and ions are in the heated admosphere and/or surroundings, but absorbtion lines say more about elements in the photosphere, so No
tHow far, no
Position in the sky: no, thats astronometry
I d go for the first

I

Answer 4

None of the statements are completely true if you ask me