H-R Diagram Flashcard 8th

Front

What does the H-R diagram classify stars based on?

Back

Temperature and luminosity.

Front

How does a blue supergiant compare to a red giant star?

Back

A blue supergiant is hotter and brighter than a red giant star.

Front

What is Barnard's Star classified as on the H-R diagram?

Back

Dim Main Sequence Star.

Front

How is our sun classified compared to other stars?

Back

Medium size with medium temperature.

Front

Which star has the lowest temperature?

Back

Star C.

Front

What are the two main axes of the H-R diagram?

Back

Temperature (horizontal axis) and luminosity (vertical axis).

Front

What type of star is found in the upper left corner of the H-R diagram?

Back

Hot, luminous stars (like blue supergiants).

Front

What type of star is found in the lower right corner of the H-R diagram?

Back

Cool, dim stars (like red 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 happens to a star after it exhausts its hydrogen fuel?

Back

It evolves into a red giant or supergiant.