HR Diagram Practice

Front

What is the HR Diagram?

Back

The HR Diagram (Hertzsprung-Russell Diagram) is a scatter plot that shows the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What type of star is Vega?

Back

Vega is a main sequence star.

Front

Which star group contains the smallest stars?

Back

White dwarfs are the smallest stars.

Front

What is the relationship between a star's temperature and its brightness in the main sequence?

Back

As a star's temperature increases, its brightness also increases.

Front

What color are stars that have the highest surface temperature?

Back

Stars with the highest surface temperature are blue.

Front

What are white dwarfs?

Back

White dwarfs are remnants of stars that have exhausted their nuclear fuel and collapsed to a very small size.

Front

What are giants in the context of stars?

Back

Giants are stars that have expanded and cooled after exhausting the hydrogen in their cores.

Front

What are supergiants?

Back

Supergiants are very large stars that are even more massive than giants and can be hundreds of times larger than the Sun.

Front

How does the surface temperature of Mira compare to Spica?

Back

Mira has a cooler surface temperature than Spica.

Front

What happens to a star's brightness as it moves off the main sequence?

Back

Typically, a star's brightness can increase or decrease depending on its evolution stage.