HR Diagram -- Exit Ticket

Front

What is the H-R Diagram?

Back

The H-R Diagram (Hertzsprung-Russell Diagram) is a graph that shows the relationship between the temperature and brightness (luminosity) of stars.

Front

What do stars on the upper left end of the main sequence represent?

Back

Stars on the upper left end of the main sequence are more massive and typically have high temperatures and luminosities.

Front

What characteristic is most associated with stars in the lower right of the H-R diagram?

Back

Stars in the lower right of the H-R diagram are characterized by low temperatures.

Front

What classification group does our Sun fall into on the H-R Diagram?

Back

Our Sun is classified as a main sequence star.

Front

What two properties does the H-R Diagram primarily show for stars?

Back

The H-R Diagram shows the relationship between temperature and brightness (luminosity) for stars.

Front

What additional information does the H-R Diagram provide besides luminosity and temperature?

Back

The H-R Diagram also provides information about the color and size of stars.

Front

What type of stars are found in the red giant region of the H-R Diagram?

Back

Red giants are stars that have expanded and cooled, resulting in a lower temperature and higher luminosity.

Front

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

Back

The main sequence is where stars spend most of their life cycle, fusing hydrogen into helium in their cores.

Front

How does the temperature of a star relate to its color?

Back

The temperature of a star determines its color; hotter stars appear blue or white, while cooler stars appear red.

Front

What happens to a star after it exhausts its hydrogen fuel?

Back

After exhausting hydrogen fuel, a star may expand into a red giant or undergo other evolutionary changes depending on its mass.