HR Diagram

Along the top of the diagram you see the different colors of stars. List the colors from left to right.

What variable is found along the x-axis on the HR diagram?

• luminosity (brightness)

• temperature

• life cycle

• popularity

What variable is found along the y-axis on the HR diagram?

• luminosity (brightness)

• temperature

• life cycle

• popularity

Look at the HR diagram and find the group of stars labeled Main Sequence. Which of these is a blue, main sequence star?

• Regulus

• Sirius

• Alpha Centauri A

• Rigel

Look at the HR diagram and find the group of stars labeled Main Sequence. Name a red main sequence star.

Now using the HR diagram, locate the group of stars labeled Supergiants. Name the red supergiant stars, choose all that apply.

• Antares

• Betelgeuse

• Bernard's Star

• Polaris

Which star is hotter: Vega or Pollux?

• Vega

• Pollux

Which star is cooler: Polaris or Regulus?

• Polaris

• Regulus

Tags

NGSS.HS-ESS1-3

Which star is dimmer: Deneb or Mira?

• Deneb

• Mira

What color stars are the hottest?

• Blue

• Yellow

• Orange

• Red