HR Diagram

Which of the following best describes a star?  A star is a celestial body ---

• composed of rock and metal with a very high density
• that is too big to be an asteroid, but too small to be a planet.
• that rotates on an axis and revolves around the Sun
• composed of gases that emit light due to nuclear reactions

Use the Hertzsprung-Russell Diagram to answer the following question. Sirius B is a _____

• Hot and Bright Star
• Cool and Bright Star
• Hot and Dim Star
• Cool and Dim Star

the distance light travels in a year

• parallax
• absolute magnitude
• apparent magnitude
• light year

True or FalseThe Earth's Sun is classified as a super giant star

• True
• False

Use the Hertzsprung-Russell Diagram to answer the following question. Spica is a _____

• Hot and Bright Star
• Cool and Bright Star
• Hot and Dim Star
• Cool and Dim Star

Use the Hertzsprung-Russell Diagram to answer the following question. Epsilon Eridani is a _____

• Hot and Bright Star
• Cool and Bright Star
• Hot and Dim Star
• Cool and Dim Star

Use the Hertzsprung-Russell Diagram to answer the following question.  What is Barnard's Star classified as?

• Dim Main Sequence Star
• Bright white dwarf star
• Bright Supergiant Star
• Dim white dwarf star

Use the Hertzsprung-Russell Diagram to answer the following question.  What is Canopus classified as?

• Dim Main Sequence Star
• Bright white dwarf star
• Bright Supergiant Star
• Dim white dwarf star

Use the Hertzsprung-Russell Diagram to answer the following question. Blue colored stars __________

• are stars with cool temperatures
• are stars with hot temperatures
• are all stars with bright luminosity.
• are all stars with dim luminosity

Use the Hertzsprung-Russell Diagram to answer the following question.  Red colored stars __________

• are stars with cool temperatures
• are stars with hot temperatures
• are all stars with bright luminosity.
• are all stars with dim luminosity