Stellar evolution：練習問題

Stars are classified according to their surface temperature. Which of the following star colours represents the coolest surface temperature?

Which stage of stellar evolution occurs immediately after a star of similar mass to the Sun leaves the red giant phase?

On a standard Hertzsprung-Russell (HR) diagram, which of the following areas corresponds to the location of Red Supergiants?

Stars can be classified according to their surface temperature. Which of the following colours represents the hottest surface temperature for a star?

Which of the following lists the stages of evolution for a star with a mass similar to the Sun in the correct order?

Identify the color of the stars that have the highest surface temperature in the universe.

A sequence of stars is classified by their surface temperatures. Arrange the following star colors in order from the coolest to the hottest: Blue, Red, Yellow, Orange.

Define absolute magnitude and explain how it differs from apparent magnitude when classifying stars.

(a) State the sequence of stages in the evolution of a star with a mass similar to the Sun, starting from its formation in a nebula.

(b) Stars can be classified by their surface temperature. Explain how a star's color is related to its temperature and identify which color corresponds to the hottest stars.

Stars are classified according to their colour, which is related to their surface temperature.

(a) State which colour of star is the hottest and which is the coolest.
(b) Describe the evolution of a star with a mass significantly larger than the Sun, starting from after it leaves the main sequence stage. In your answer, name the specific stages and the possible end states of the star.