8.8A H-R EYNTK

Front

What is the Hertzsprung-Russell diagram?

Back

A graphical representation that shows the relationship between the brightness, surface temperature, and color of stars.

Front

What are the four main sections of the Hertzsprung-Russell diagram?

Back

1. Main Sequence, 2. Giants, 3. Supergiants, 4. White Dwarfs.

Front

Which section of the Hertzsprung-Russell diagram includes the coolest, brightest stars?

Back

Section 2, which contains red giants.

Front

What is the spectral class of a star with a surface temperature below 3,800 K?

Back

Spectral class M.

Front

What is the relationship between a star's color and its temperature?

Back

Generally, cooler stars appear red, while hotter stars appear blue or white.

Front

What type of stars are found in the Main Sequence section of the Hertzsprung-Russell diagram?

Back

Stars that are in the stable phase of hydrogen burning, including our Sun.

Front

What is luminosity in the context of stars?

Back

Luminosity is the total amount of energy emitted by a star per unit of time.

Front

Which type of star has the highest luminosity in spectral class M?

Back

Supergiants.

Front

What is the approximate surface temperature of Barnard's Star?

Back

About 2,800 K.

Front

How does the brightness of Barnard's Star compare to the Sun?

Back

Barnard's Star is less bright than the Sun.