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 does the color of a star indicate?

Back

The color of a star indicates its temperature; for example, blue stars are the hottest, while red stars are the coolest.

Front

What is the Main Sequence in the HR-Diagram?

Back

The Main Sequence is a continuous and distinctive band of stars that appears on the HR-Diagram, where most stars, including the Sun, are found. These stars are in a stable phase of hydrogen burning.

Front

Which type of star is typically the hottest?

Back

Blue Star.

Front

Which type of star is typically the coldest?

Back

Red Star.

Front

What are Giants in the context of the HR-Diagram?

Back

Giants are a category of stars that are larger and more luminous than main-sequence stars but are not as hot as supergiants.

Front

What are White Dwarfs?

Back

White Dwarfs are small, dense remnants of stars that have exhausted their nuclear fuel and are no longer undergoing fusion.

Front

True or False: Giants are considered hotter than White Dwarfs.

Back

False.

Front

What characteristics are used to classify stars?

Back

Stars are classified based on their temperature/color and brightness.

Front

What is a Supergiant star?

Back

Supergiants are among the largest and most luminous stars in the universe, often found at the upper end of the HR-Diagram.