HR-Diagram

Front

What is the HR-Diagram used for?

Back

The HR-Diagram (Hertzsprung-Russell Diagram) is used to classify stars based on their luminosity, color, temperature, and evolutionary stage.

Front

What does the color of a star indicate?

Back

The color of a star indicates its temperature; hotter stars appear blue or white, while cooler stars appear red or orange.

Front

What happens to a star's temperature as you move left on the HR-Diagram?

Back

As you move left on the HR-Diagram, stars get hotter.

Front

How is the size of our sun classified compared to other stars?

Back

The sun is classified as a medium-sized star with a medium temperature.

Front

What is the relationship between a star's brightness and its position on the HR-Diagram?

Back

Brighter stars are typically found in the upper part of the HR-Diagram, while dimmer stars are found lower down.

Front

What type of star is Aldebaran compared to the sun?

Back

Aldebaran is a brighter star than the sun.

Front

What are the main axes of the HR-Diagram?

Back

The vertical axis represents luminosity (brightness), while the horizontal axis represents temperature (color).

Front

What is a Giant star in terms of size and temperature?

Back

Giant stars are larger than the sun and generally have a higher luminosity but can vary in temperature.

Front

What is a White Dwarf?

Back

A White Dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

How do stars evolve on the HR-Diagram?

Back

Stars evolve from the main sequence to giants or supergiants, and eventually to white dwarfs or supernova remnants.