HR Diagrams

Front

What is the approximate surface temperature of the Sun?

Back

5,500 °C

Front

What is a large cloud of gas and dust in interstellar space that is the predecessor to stars?

Back

Nebula

Front

Which star is the coldest?

Back

Red Star

Front

What happens to stars as we move to the left on the HR Diagram?

Back

Stars get hotter

Front

What do we call all of the galaxies and matter that exist?

Back

Universe

Front

What is the main purpose of an HR Diagram?

Back

To classify stars based on their luminosity, temperature, and evolutionary stage.

Front

What type of star is typically the hottest?

Back

Blue Star

Front

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

Back

Hotter stars appear blue, while cooler stars appear red.

Front

What is a supernova?

Back

A powerful explosion that occurs when a star exhausts its nuclear fuel.

Front

What is the main sequence in the HR Diagram?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.