HR Diagrams Activity

Front

What determines what happens when a star leaves the Main Sequence?

Back

Mass

Front

What color are the coolest stars?

Back

Red

Front

Which stage does our Sun belong to in the HR diagram?

Back

Main Sequence

Front

What changes as you move from the bottom to the top of the HR diagram on the y-axis?

Back

Luminosity or Brightness

Front

What color stars are the hottest?

Back

White

Front

What is the HR diagram used for?

Back

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

Front

What are the two main axes of the HR diagram?

Back

Temperature (x-axis) and Luminosity (y-axis).

Front

What type of stars are found in the upper right corner of the HR diagram?

Back

Red supergiants.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low to medium mass star after it has exhausted its nuclear fuel.

Front

What happens to a star's luminosity as it evolves off the Main Sequence?

Back

It generally increases as it becomes a red giant or supergiant.