Question

question 2
3 pts
the two characterists of stars shown on an h - r diragam are absolute brightness and
color
size
surface temperature
distance from earth

Explanation:

The Hertzsprung - Russell (H - R) diagram is a fundamental tool in astronomy. It is a scatter plot of stars that shows the relationship between the stars' absolute magnitudes (or luminosities) and their spectral types (or surface temperatures). Color is related to temperature (e.g., blue stars are hotter), but the H - R diagram directly plots surface temperature (on the x - axis, usually as spectral type which is correlated with temperature) and absolute brightness (on the y - axis). Size is not directly one of the two main axes (though it can be inferred from the position on the diagram using stellar models), and distance from Earth is not relevant as absolute brightness already accounts for the star's intrinsic brightness (independent of distance).

Answer:

surface temperature