H-R 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 luminosity (brightness) of stars and their effective temperatures (color).

Front

What are the main categories of stars in the H-R Diagram?

Back

The main categories are Main Sequence, Giants, Supergiants, and White Dwarfs.

Front

Which type of star is the hottest on the H-R Diagram?

Back

Blue stars are the hottest stars on the H-R Diagram.

Front

What type of star is the coolest on the H-R Diagram?

Back

Red stars are the coolest stars on the H-R Diagram.

Front

What happens to a star's temperature as you move from right to left on the H-R Diagram?

Back

As you move from right to left, stars get hotter.

Front

What is the Main Sequence?

Back

The Main Sequence is a continuous band of stars that represents the majority of stars, where they spend most of their life fusing hydrogen into helium.

Front

How does a red supergiant compare to a white dwarf?

Back

A red supergiant is colder and brighter compared to a white dwarf.

Front

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

Back

A star's color indicates its temperature; blue stars are hot, while red stars are cool.

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

What are supergiants?

Back

Supergiants are very large and bright stars that are at the end of their life cycle.