HR Diagram

Front

What does the H-R Diagram represent?

Back

The H-R 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 spectral class is associated with the hottest stars?

Back

Spectral class O is associated with the hottest stars.

Front

What spectral class is our Sun classified as?

Back

Our Sun is classified as a G-type star.

Front

What is a White Dwarf?

Back

A White Dwarf is a small, dense star that is typically the size of Earth but has a mass comparable to that of the Sun, and it represents the final evolutionary state of stars like our Sun.

Front

What is a Red Giant?

Back

A Red Giant is a luminous giant star that is cooler than a main-sequence star and has expanded and cooled after exhausting the hydrogen in its core.

Front

Which color of star is the coolest?

Back

Red stars are the coolest among the main types of stars.

Front

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

Back

A star's temperature is directly related to its color; hotter stars appear blue or white, while cooler stars appear red.

Front

What is the significance of the main sequence on the H-R Diagram?

Back

The main sequence is a continuous and distinctive band of stars that appears on the H-R Diagram, where stars spend most of their life cycle fusing hydrogen into helium.

Tags

NGSS.HS-ESS1-1

Front

What type of star is Barnard's Star?

Back

Barnard's Star is a red dwarf star, which is cool, dim, and has a low luminosity.

Front

What is the difference between a Giant star and a Dwarf star?

Back

Giant stars are larger and more luminous than Dwarf stars, which are smaller and less luminous.