HR Diagram Review

Front

Red stars are the _____________.

Back

coolest

Front

Blue stars are the _____________.

Back

hottest

Front

What is found on the x axis of an H-R diagram?

Back

Temperature

Front

Which star is considered a supergiant?

Back

Betelgeuse

Front

What is found on the y axis of an H-R diagram?

Back

Luminosity (or brightness)

Front

What does the H-R diagram represent?

Back

The relationship between the luminosity and temperature of stars.

Front

What type of stars are found in the upper right of the H-R diagram?

Back

Cool, luminous stars (giants and supergiants)

Front

What type of stars are found in the lower left of the H-R diagram?

Back

Hot, dim stars (white dwarfs)

Front

What is the significance of the main sequence on the H-R diagram?

Back

It represents the stage in a star's life where it fuses hydrogen into helium.

Front

What is a white dwarf?

Back

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