Chapter 6

1

What is the spectral sequence in order of increasing temperature?

1

Which of the following can we use to determine the surface temperature of a star?

1

The table lists the spectral types for each of four stars. Which star in this table would have the lowest surface temperature?

1

The table lists the spectral types for each of four stars. Which star in this table would have the highest surface temperature?

1

What properties of a star determine its luminosity?

1

How do we know that giant stars are larger in diameter than the Sun?

1

Sirius A and B are two stars at the same distance from the Earth. In this binary system, Sirius A is much brighter but Sirius B is much hotter. From this information, what can you conclude about the two stars?

1

In a Hertzsprung-Russell diagram, where are the stars with the smallest radius found?

1

In a Hertzsprung-Russell diagram, where are 90 percent of all the stars found?

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The star named Sheat is of spectral type M2 and luminosity class II. Based on this information, how does Sheat compare to the Sun?

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The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this information, how does Circini compare to the Sun?

1

Where are red giant stars found in the Hertzsprung-Russell diagram?

1

Which star in the table is the closest to Earth?

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Which star in the table has the highest surface temperature?

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Which star in the table has the largest diameter?

Astronomy

What is the spectral sequence in order of increasing temperature?

Which of the following can we use to determine the surface temperature of a star?

The table lists the spectral types for each of four stars. Which star in this table would have the lowest surface temperature?

The table lists the spectral types for each of four stars. Which star in this table would have the highest surface temperature?

What properties of a star determine its luminosity?

How do we know that giant stars are larger in diameter than the Sun?

Sirius A and B are two stars at the same distance from the Earth. In this binary system, Sirius A is much brighter but Sirius B is much hotter. From this information, what can you conclude about the two stars?

In a Hertzsprung-Russell diagram, where are the stars with the smallest radius found?

In a Hertzsprung-Russell diagram, where are 90 percent of all the stars found?

The star named Sheat is of spectral type M2 and luminosity class II. Based on this information, how does Sheat compare to the Sun?

The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this information, how does Circini compare to the Sun?

Where are red giant stars found in the Hertzsprung-Russell diagram?

Which star in the table is the closest to Earth?

Which star in the table has the highest surface temperature?

Which star in the table has the largest diameter?