HR Diagram

Front

What color is a star that is 3,000 K?

Back

Red

Front

What color stars are the coolest?

Back

Red

Front

What color stars are the hottest?

Back

Blue

Front

What part of a star's life cycle are the stars that are represented in purple in the HR diagram?

Back

Main Sequence

Front

True or False: In the main sequence, hotter stars are brighter stars.

Back

True

Front

What is the HR diagram used for?

Back

The HR diagram is used to classify stars based on their luminosity, color, temperature, and evolutionary stage.

Front

What does the x-axis of the HR diagram represent?

Back

The x-axis represents the temperature of stars, usually in Kelvin.

Front

What does the y-axis of the HR diagram represent?

Back

The y-axis represents the luminosity of stars, often in terms of solar luminosity.

Front

What is the significance of the Main Sequence on the HR diagram?

Back

The Main Sequence is where stars spend the majority of their life cycle, fusing hydrogen into helium.

Front

What type of stars are found in the upper right corner of the HR diagram?

Back

Red giants and supergiants.