Question

As a clump of interstellar gas contracts to become a main-sequence star, its changing position on the H-R diagram tells us __________.

Answer 1

how its outward appearance is changing

Step-by-step explanation:

H-R diagram is a fundamental tool used to classify stars. The position of stars on the H-R diagram is dependent on its luminosity and temperature.

The position of the star is represented by its outward appearance specially the color. The hottest and brightest the star, the more it lies between the red and blue color range.

The cooler stars lie on the right side of the H-R diagram while the hot stars lie on the left side of the H-R diagram.