HR Diagram Review

Front

What does the HR Diagram represent?

Back

The HR Diagram shows the relationship between the luminosity (brightness) and temperature of stars.

Front

What color is Zeta Eridani on the HR Diagram?

Back

Zeta Eridani is blue.

Front

Which star is classified as a giant star?

Back

Mira is considered a giant star.

Front

What is the significance of a star's magnitude?

Back

A star's magnitude indicates its brightness; a lower magnitude number means a brighter star.

Front

Which star is the brightest: a magnitude -1 star, a magnitude 1 star, a magnitude 2 star, or a magnitude 3 star?

Back

A magnitude -1 star is the brightest.

Front

What type of star is Vega classified as?

Back

Vega is classified as a main sequence star.

Front

What is the main sequence in the HR Diagram?

Back

The main sequence is a continuous band of stars that are fusing hydrogen into helium in their cores.

Front

What color are main sequence stars typically?

Back

Main sequence stars can be blue, white, yellow, or red, depending on their temperature.

Front

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

Back

Hotter stars are blue or white, while cooler stars are yellow or red.

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.