Question

a stars absolute magnitude is *
1 point
○ how bright is appears from earth
○ how luminous it appears from earth
○ how hot it appears from earth
○ how much light is actually given off if measured from the same distance as other stars

a blue or white star is a *
1 point
○ yellow star
○ cool or cold star
○ hot star on the main sequence
○ not a star but a type of supernova

Explanation:

First Question (A star's absolute magnitude is):

• The apparent magnitude is how bright a star appears from Earth. Absolute magnitude standardizes the measurement by considering the star's luminosity at a standard distance (10 parsecs) to compare with other stars. So the option "how much light is actually given off if measured from the same distance as other stars" is correct. The other options are about apparent (from Earth) or incorrect aspects (like temperature, which is related to color but not magnitude definition).

• Blue or white stars have high surface temperatures (hot). Main - sequence stars with these colors are hot (e.g., O and B type main - sequence stars are blue/white and hot). A yellow star (like our Sun) is cooler, a cool/cold star would be redder, and a supernova is an explosion, not a star type. So "hot star on the main sequence" is correct.

Answer:

how much light is actually given off if measured from the same distance as other stars

Second Question (A blue or white star is a):