Review over 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 category contains the most stars in the HR Diagram?

Back

Main Sequence.

Front

How is our sun classified compared to other stars?

Back

Our sun is considered medium size with medium temperature.

Front

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

Back

Stars get hotter.

Front

Which type of stars are the hottest?

Back

Blue stars are the hottest.

Front

What are supergiants?

Back

Supergiants are very large stars that are much brighter than the sun and have a short lifespan.

Front

What is the temperature range of red stars?

Back

Red stars are the coolest stars, with temperatures below 3,500 K.

Front

What is the significance of the Main Sequence in the HR Diagram?

Back

The Main Sequence is where stars spend most of their lifetime, fusing hydrogen into helium.

Front

What are giants in the context of the HR Diagram?

Back

Giants are stars that are larger than the sun but not as large as supergiants, typically with a temperature range of 3,500 K to 6,000 K.

Front

What does luminosity refer to in the HR Diagram?

Back

Luminosity refers to the total amount of energy emitted by a star per second.