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. They are typically hotter than giants but have lower luminosity.

Tags

NGSS.HS-ESS1-3

Front

What color is Deneb?

Back

Deneb is classified as a white star.

Front

What is the spectral class of a star with a temperature of 2,800 K?

Back

The spectral class of a star with a temperature of 2,800 K is Spectral Class M.

Front

Which star is cooler: Polaris or Regulus?

Back

Polaris is the cooler star.

Front

What is a yellow main sequence star?

Back

A yellow main sequence star is a star that falls within the spectral class G, which includes stars like the Sun.

Tags

NGSS.HS-ESS1-1

Front

What is the temperature range for Spectral Class O stars?

Back

Spectral Class O stars have temperatures greater than 30,000 K.

Front

What is the significance of a star's color?

Back

A star's color indicates its temperature; blue stars are the hottest, while red stars are the coolest.

Front

What is the main sequence in the HR Diagram?

Back

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

Tags

NGSS.HS-ESS1-1

Front

What type of star is Procyon?

Back

Procyon is a yellow main sequence star.