HR Diagram

What is the luminosity of the Sun?

• 10

• 1/10 or 0.1

• 100

• 1

Which color of stars is the hottest?

• Red

• Blue

• White

• Yellow

Which color of stars is the coldest?

• Red

• Blue

• White

• Yellow

Which group of stars on the HR diagram are very hot, but very dim (low luminosity)?

• Red giants

• White dwarfs

• Main sequence

• Supergiants

Which of the following does NOT appear on the HR diagram?

• White dwarfs

• Black holes

• Supergiants

• Main sequence

Use your HR diagram and compare the two main sequence stars Sirius and Vega. Which one is cooler?

• Sirius

• Vega

When comparing the two supergiants Rigel and Betelgeuse, which statement is FALSE?

• Betelguese has a lower temperature than Rigel

• Rigel has a much higher luminosity than Betelgeuse

• Rigel is blue while Betelgeuse is red

Which star on your HR diagram has the lowest temperature (the coldest)?

• Vega

• Rigel

• Capella

• Betelgeuse

Which star on your HR diagram has the lowest luminosity?

• The Sun

• Capella

• Rigel

• Antares

If a new star was discovered and appeared orange, what is the range of temperatures the star could be, in degrees Kelvin?

• 4,000 - 0 K

• 5,000 - 4,000 K

• 20,000 - 10,000 K

• 40,000 - 20,000 K

Tags

NGSS.HS-PS4-1