Warm-up: HR Diagram

Front

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

Back

Stars get hotter.

Front

Which category contains the most stars on the HR diagram?

Back

Main Sequence.

Front

What is true of Red Supergiants according to the HR diagram?

Back

They are brighter than our sun, but have a lower temperature.

Front

Which star is cool, dim, and red on the HR diagram?

Back

Barnard's star.

Front

Which letter on the HR diagram represents an average sized star at the end of its life?

Back

C.

Front

What is the HR diagram used for?

Back

To classify stars based on their luminosity and temperature.

Front

What are the two main axes of the HR diagram?

Back

Luminosity (vertical axis) and temperature (horizontal axis).

Front

What type of stars are found in the Main Sequence?

Back

Stars that are in the stable phase of hydrogen burning.

Front

What characterizes a Supergiant star?

Back

They are very large and luminous stars that have a short lifespan.

Front

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

Back

Hotter stars appear blue or white, while cooler stars appear red.