HR Diagram

Front

What is the HR Diagram?

Back

The HR Diagram, or 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

The sun is considered medium size with a medium temperature.

Front

What does area D in the HR Diagram represent?

Back

Area D is characterized as dimmer and cooler.

Front

What is a galaxy?

Back

A galaxy is a giant structure that contains dust, gases, and hundreds of billions of stars.

Front

What describes stars located in area A of the HR Diagram?

Back

Stars in area A are bright and hot.

Front

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

Back

The Main Sequence is where most stars, including the sun, are found, and it represents a stage in stellar evolution where stars fuse hydrogen into helium.

Front

What are supergiants?

Back

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

Front

What are giants in the context of the HR Diagram?

Back

Giants are stars that have expanded and cooled after exhausting the hydrogen in their cores.

Front

What is the relationship between temperature and brightness in the HR Diagram?

Back

Generally, hotter stars are brighter, and cooler stars are dimmer.