As a star moves along the red giant branch,how does it move on the HR diagram?
A) It does not move.
B) downward and to the left
C) upward and to the left
D) upward and to the right

Question

Quizplus · Accepted Answer

As a star evolves into a red giant, it becomes larger and cooler, which means it moves upward (indicating an increase in luminosity) and to the right (indicating a decrease in surface temperature) on the Hertzsprung-Russell (HR) diagram.

As a Star Moves Along the Red Giant Branch,how Does