Hertzsprung Russell Diagram

Front

What is the Hertzsprung-Russell Diagram?

Back

A diagram that plots stars based on their brightness and color.

Front

Which spectral class does our star, the Sun, belong to?

Back

G

Front

What type of stars are considered the hottest?

Back

Blue stars are the hottest.

Front

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

Back

Hotter stars are blue, while cooler stars are red.

Front

What are giants in the context of the HR diagram?

Back

Giants are large stars that are brighter than main-sequence stars but cooler.

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 does the brightness of a star relate to its position on the HR diagram?

Back

The vertical axis of the HR diagram represents a star's brightness, with brighter stars located higher up.

Front

What does the horizontal axis of the HR diagram represent?

Back

The horizontal axis represents a star's temperature, with hotter stars on the left and cooler stars on the right.

Front

What is the significance of the main sequence on the HR diagram?

Back

The main sequence is where most stars, including the Sun, are found, and it represents a stable phase of stellar evolution.

Front

What happens to a star after it exhausts its hydrogen fuel?

Back

It evolves off the main sequence and can become a red giant or a supergiant.