What can we learn about a star from a life track on an H-R diagram?
A) The surface temperature and luminosity the star will have at each stage of its life
B) The star's age
C) The star's current stage of life
D) How the star's distance from Earth varies at different times in its life

Question

Quizplus · Accepted Answer

A star's position on an H-R diagram can show us its surface temperature and luminosity, and by following its life track, we can see how these properties change at different stages in its life.

Answer: B 
 The location of a star on an H-R diagram can provide an estimate of its age based on its position relative to other stars of known age.

Answer: C 
 By following a star's life track on an H-R diagram, we can determine its current stage of life, whether it is a main sequence star, a red giant, a white dwarf, or another type of star.

Answer: D 
 An H-R diagram does not provide information about a star's distance from Earth, so this choice is not accurate.

What Can We Learn About a Star from a Life