TEKS 8.8A Universe HR Diagram 4

The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?

• Earth is a part of this galaxy
• Many more stars exist outside the galaxy
• The stars in the center of the galaxy are extremely small.
• The center of the galaxy consists of a dense cluster of stars.

Use the Hertzsprung Russell Diagram to answer the following question. Which of these observations of Epsilon Eridani is most likely accurate?

• Epsilon Eridani is less bright than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Epsilon Eridani is brighter than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Epsilon Eridani is brighter than the Sun, has a surface temperature below 6,000 ^oC, and is red.

• Epsilon Eridani is less bright than the Sun, has a surface temperature below 5,000 ^oC, and is yellow

Use the Hertzsprung Russell Diagram to answer the following question. Which of these observations of Procyon is most likely accurate?

• Procyon is less bright than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Procyon is brighter than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Procyon is brighter than the Sun, has a surface temperature of about 6,000 ^oC, and is yellow.

• Procyon is less bright than the Sun, has a surface temperature of about 6,000 ^oC, and is yellow

Use the Hertzsprung Russell Diagram to answer the following question. Which of these observations of Tau Ceti is most likely accurate?

• Tau Ceti is less bright than the Sun, has a surface temperature above 5,000 ^oC, and is red orange.

• Tau Ceti is brighter than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Tau Ceti is brighter than the Sun, has a surface temperature below 5,000 ^oC, and is yellow.

• Tau Ceti is less bright than the Sun, has a surface temperature above 5,000 ^oC, and is yellow

Based on this diagram which type of stars would belong to spectral class M and have the lowest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

Based on this diagram which type of stars would belong to spectral class G and have the highest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

Based on this diagram which type of stars would belong to spectral class B and have the lowest luminosity?

• Main Sequence Stars
• Giants
• Super Giants
• White Dwarfs

Use the Hertzsprung Russell Diagram to answer the following question. How do the characteristics of Vega and Barnard's Star compare?

• Vega is cooler and less bright than Barnard's Star.

• Vega is hotter and brighter than Barnard's Star.

• Vega is cooler and brighter than Barnard's Star.

• Vega is hotter and less bright than Barnard's Star.

Use the Hertzsprung Russell Diagram to answer the following question. How do the characteristics of Vega and Betelgeuse compare?

• Vega is cooler and less bright than Betelgeuse.

• Vega is hotter and brighter than Betelgeuse.

• Vega is cooler and brighter than Betelgeuse.

• Vega is hotter and less bright than Betelgeuse.

Use the Hertzsprung Russell Diagram to answer the following question. How do the characteristics of Vega and Rigel compare?

• Vega is cooler and less bright than Rigel.

• Vega is hotter and brighter than Rigel.

• Vega is cooler and brighter than Rigel.

• Vega is hotter and less bright than Rigel.