H-R Diagram #2

First Name

Last Name

Class Period

• 1st
• 4th
• 5th
• 6th
• 8th

2. What spectral class is the sun located in?

• G
• O
• A
• M

3. The star is several thousand times brighter than the sun with a temperature of 5,500 K would be classified as-

• a supergiant in spectral class G
• a main-sequence star in spectral class O
• a white dwarf star in spectral class B
• a white dwarf star in spectral class A

4. The star is 100 times dimmer than the sun with a temperature of 24,000 K would be classified as-

• a supergiant in spectral class G
• a main-sequence star in spectral class O
• a white dwarf star in spectral class B
• a white dwarf star in spectral class A

5. The star is 100 times brighter than the sun with a temperature of 9,000 K would be classified as-

• a supergiant in spectral class G
• a main-sequence star in spectral class O
• a white dwarf star in spectral class B
• a main-sequence star spectral class A

6. Based on the H-R Diagram, which type of stars would belong to spectral class B with the lowest luminosity?

• White dwarfs
• Main-Sequence stars
• Giants
• Super giants

7. Based on the H-R Diagram, which type of stars would belong to spectral class K with a luminosity of 10² power?

• White dwarfs
• Main-Sequence stars
• Giants
• Super giants

8. Polaris has an approximate temperature of 7,200 K. What spectral class does Polaris belong to?

• Spectral Class F
• Spectral Class M
• Spectral Class O
• Spectral Class B