# Chapter 6

### Description

Astronomy
Quiz by Ryan Tram, updated more than 1 year ago
 Created by Ryan Tram about 7 years ago
454
4

## Resource summary

### Question 1

Question
What is the spectral sequence in order of increasing temperature?
• MKFAGBO
• BAFGKMO
• MKGFABO
• ABFMKGO

### Question 2

Question
Which of the following can we use to determine the surface temperature of a star?
• determining if the star has a companion star
• studying its line absorption spectrum
• measuring the star’s distance
• measuring the star’s parallax

### Question 3

Question
The table lists the spectral types for each of four stars. Which star in this table would have the lowest surface temperature?
• α For
• ο Cet
• γ Tri
• ξ Per

### Question 4

Question
The table lists the spectral types for each of four stars. Which star in this table would have the highest surface temperature?
• α For
• a
• γ Tri
• ξ Per

### Question 5

Question
What properties of a star determine its luminosity?
• distance and diameter
• temperature and distance
• temperature and diameter
• apparent magnitude and temperature

### Question 6

Question
How do we know that giant stars are larger in diameter than the Sun?
• They are more luminous but have about the same temperature
• They are less luminous but have about the same temperature
• They are hotter but have about the same luminosity
• They are cooler but have about the same luminosity

### Question 7

Question
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?
• Sirius B must be much smaller than Sirius A
• Sirius B must be much larger than Sirius A
• Sirius B must be much more massive than Sirius A
• Sirius B must be much less massive than Sirius A

### Question 8

Question
In a Hertzsprung-Russell diagram, where are the stars with the smallest radius found?
• in the upper left corner
• in the upper right corner
• in the lower left corner
• in the lower right corner

### Question 9

Question
In a Hertzsprung-Russell diagram, where are 90 percent of all the stars found?
• in the giant region
• in the supergiant region
• on the dwarf sequence
• on the main sequence

### Question 10

Question
The star named Sheat is of spectral type M2 and luminosity class II. Based on this information, how does Sheat compare to the Sun?
• Sheat is cooler and larger than the Sun
• Sheat is cooler and smaller than the Sun
• Sheat is hotter and more luminous than the Sun
• Sheat is hotter and larger than the Sun

### Question 11

Question
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?
• Circini is cooler and larger than the Sun
• Circini is cooler and smaller than the Sun
• Circini is hotter and more luminous than the Sun
• Circini is hotter and less luminous than the Sun

### Question 12

Question
Where are red giant stars found in the Hertzsprung-Russell diagram?
• above the main sequence
• below the main sequence
• on the lower main sequence
• on the upper main sequence

### Question 13

Question
Which star in the table is the closest to Earth?
• δ Cen
• HR 4758
• HD 39801
• 9 CMa

### Question 14

Question
Which star in the table has the highest surface temperature?
• δ Cen
• HR 4758
• HD 39801
• 9 CMa

### Question 15

Question
Which star in the table has the largest diameter?
• δ Cen
• HR 4758
• HD 39801
• 9 CMa

### Similar

Moon Phases Quiz
Life cycle of a star
Chapter 3
Chapter 2
Chapter 4
Chapter 8
Chapter 5
Chapter 1
Chapter 10
Chapter 7
Chapter 9