H-R Diagram

Front

About 90 percent of stars on the H-R diagram are ____ stars.

Back

main sequence

Front

What is the primary difference between a star of spectral class K0 in the Y region, compared to a star of spectral class K0 in the X region?

Back

brightness

Front

Using the H-R diagram, Aldebaran, Mira, and Pollux are all _____ stars.

Back

giant

Front

The color index of a star provides information about that star’s _____.

Back

temperature

Front

The effective temperature of a star is related to its _____.

Back

color

Front

What does the H-R diagram plot?

Back

Luminosity vs. Temperature of stars.

Front

What are the main regions of the H-R diagram?

Back

Main sequence, giants, supergiants, and white dwarfs.

Front

What type of star is found in the upper right corner of the H-R diagram?

Back

Supergiant stars.

Front

What does a star's luminosity indicate?

Back

The total amount of energy emitted by the star per second.

Front

How does temperature affect a star's color?

Back

Hotter stars appear blue, while cooler stars appear red.