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 are White Dwarfs?

Back

White Dwarfs are small, dense stars that are the remnants of stars that have exhausted their nuclear fuel and shed their outer layers.

Front

What is the Main Sequence?

Back

The Main Sequence is a continuous and distinctive band of stars that appears on the HR Diagram, where stars spend most of their lifetime fusing hydrogen into helium.

Front

What are Supergiants?

Back

Supergiants are very large stars that are much brighter than the sun and have a short lifespan, often ending in supernova explosions.

Front

What are Giants?

Back

Giants are stars that have expanded and cooled after exhausting the hydrogen in their cores, and they are larger and brighter than main sequence stars.

Front

Which star group contains the smallest stars?

Back

White Dwarfs.

Front

Which of the following is NOT a star group found on a HR diagram?

Back

Black Holes.

Front

What category contains the most stars?

Back

Main Sequence.

Front

What is a yellow main sequence star?

Back

A yellow main sequence star is a star that has a surface temperature between 5,300 and 6,000 K, such as Procyon.

Front

Which star is brighter than the sun?

Back

Aldebaran.