HR Diagram

Front

What is the HR Diagram?

Back

The HR Diagram (Hertzsprung-Russell Diagram) is a scatter plot that shows the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What star has the hottest temperature?

Back

Blue Giants

Front

What is a Nebula?

Back

A large cloud of gas and dust in interstellar space; it is the predecessor to stars.

Front

What is a Light Year?

Back

The distance that light travels in one year, approximately 5.88 trillion miles or 9.46 trillion kilometers.

Front

What characteristics are used to classify stars?

Back

Temperature/color and brightness.

Front

What happens to stars as we move to the left on the HR Diagram?

Back

Stars get hotter.

Front

What are White Dwarfs?

Back

White Dwarfs are small, dense stars that are the remnants of stars that have exhausted their nuclear fuel.

Front

What are Red Supergiants?

Back

Red Supergiants are very large stars that are in the late stages of stellar evolution, characterized by their red color and high luminosity.

Front

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

Back

Hotter stars appear blue or white, while cooler stars appear red or orange.

Front

What is Luminosity?

Back

Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.