Created by: Test Bank Created by: Test Bank
a. Solar System. d. Virgo Supercluster.
TEST BANK FOR 21ST CENTURY ASTRONOMY
b. Milky Way. e. Laniakea Supercluster.
6th Edition by Laura Kay, Stacy Palen, George c. Local Group.
ANS: C DIF: Moderate REF: 1.1
Blumenthal A+ Grade OBJ: 1.1a State our “cosmic address.” MSC: Remembering
CHAPTER 1
Thinking like an Astronomer 5. According to the figure below, if you were to specify your address in the universe, listing
MULTIPLE CHOICES your membership from the smallest to largest physical structures, it would be
1. The Sun is a a. Earth, Local Group, Solar System, Andromeda, the universe.
a. supercluster. d. star. b. Earth, Solar System, Local Group, Milky Way, the universe.
b. moon. e. planet. c. Earth, Solar System, Milky Way, Local Group, Laniakea Supercluster, the universe.
c. galaxy. d. Earth, Solar System, Milky Way, Laniakea Supercluster, the universe.
ANS: D DIF: Easy REF: 1.1 e. Earth, Laniakea Supercluster, Milky Way, Solar System, the universe. ANS: C DIF:
OBJ: 1.1a State our “cosmic address.” MSC: Remembering Difficult REF: 1.1
2. The number of planets in our Solar System is OBJ: 1.1a State our “cosmic address.” MSC: Understanding
a. six. d. twelve.
b. eight. e. twenty.
c. nine.
ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Remembering
3. Milky Way is the name of
a. our Solar System. d. the supercluster of galaxies we are in.
b. the galaxy in which we live. e. the entire universe.
c. the local group of galaxies we are in.
ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Understanding
4. Our galaxy and the few dozen nearest galaxies are known as the 6. The Andromeda Galaxy is also part of the Local Group, so it is also part of
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a. the Solar System. d. the Virgo Supercluster. a. 8 seconds d. 8 days
b. the Milky Way. e. dark energy. b. 8 minutes e. 8 years
c. the Moon. c. 8 hours
ANS: D DIF: Difficult REF: 1.1 ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Understanding OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
7. According to the figure below, Earth is located approximately 10. One of the nearest stars, Alpha Centauri, is 4.4 light-years from Earth. The time it takes
light to travel from Alpha Centauri to us is
a. 1.25 seconds. d. 600 years.
b. 8.3 minutes. e. 2.2 million years.
c. 4.4 years.
ANS: C DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
a. at the center of the Milky Way.
b. near the center of the Milky Way. 11. The time it takes light to cross Neptune’s orbit is closest to which of the following?
c. about halfway out from the center of the Milky Way. a. instantaneous
d. at the farthest outskirts of the Milky Way. b. a second
e. outside the Milky Way, which is why we can see it as a band across the night sky. c. a quick meal
ANS: C DIF: Easy REF: 1.1 d. a night’s sleep
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing e. the time between presidential elections
ANS: D DIF: Easy REF: 1.1
8. When a change occurs on the surface of the Sun, how long does it take before OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing
astronomers on Earth can see the change?
a. 8 minutes d. 1 day 12. A light-hour is a measure of
b. 11 hours e. It reaches us instantaneously. a. time. d. speed.
c. 1 second b. distance. e. acceleration.
ANS: A DIF: Easy REF: 1.1 c. energy.
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying ANS: B DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding
9.
takes approximately to reach Earth.
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13. If one thinks about the distance between Earth and the Moon, 384,400 km, approximately ANS: D DIF: Difficult REF: 1.1
how much of that distance would Saturn and its rings take up? OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
a. much more than this distance
b. less than half this distance 17.
c. more than half this distance How long does it take light to travel from Alpha Centauri to us?
d. exactly this distance a. 1.25 seconds d. 560 years
e. None of these choices is correct. b. 8.3 minutes e. 6,200 years
ANS: B DIF: Moderate REF: 1.1 c. 4.4 years
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding ANS: C DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
14. The diameter of the Moon is
a. larger than the distance across the continental United States. 18. A light-year is a unit commonly used in astronomy as a measure of
b. roughly equal to the longest distance across Texas. a. time. d. distance.
c. more than half the distance across the continental United States. b. speed. e. acceleration.
d. less than half the distance across the continental United States. c. mass.
e. None of these choices is correct. ANS: D DIF: Moderate REF: 1.1
ANS: C DIF: Moderate REF: 1.1 OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering
19. How many times larger is our galaxy (100,000 light-years across) than our Solar System
15. What is the approximate number of stars in the Milky Way? (11 light-hours across)?
a. 10 million d. 300 billion
b. 300 million e. 1 trillion a. 100 d. 106
c. 10 billion b. 1,000
ANS: D DIF: Moderate REF: 1.1 c. 10,000 e. 108
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering ANS: D DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
16.
How long does it take light to travel from Andromeda to us? 20. After the Sun, the next nearest star to us is approximately away.
a. 4.4 years d. 2.5 million years a. 8 light-seconds d. 4 light-years
b. 360 years e. 4.5 billion years b. 80 light-minutes e. 200 light-years
c. 1.2 thousand years c. 40 light-hours
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ANS: D DIF: Moderate REF: 1.1 22. Light from the Andromeda Galaxy that is just reaching us first left Andromeda when
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering a. the woolly mammoth last walked the Earth.
b. humans began exploring the skies with telescopes.
21. The figure below measures distances in the amount of time it takes light to travel. If the c. Homo erectus first walked the Earth.
circumference of Earth is a snap of your fingers (1/7 second), the diameter of the Solar System is d. the Solar System formed.
approximately equal to e. the universe began.
ANS: C DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
23.
1023 m away) to us?
a. 7,000 years d. 12 million years
b. 54,000 years e. 54 million years
c. 120,000 years
ANS: E DIF: Moderate REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
24. The speed of light is approximately
a. 3,000 km/s. d. 3 million km/s.
b. 30,000 km/s. e. 3 billion km/s.
c. 300,000 km/s.
ANS: C DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering
a. the length of a quick lunch. d. the time you spent in high school. 25. Our universe is approximately 13.7 years old.
b. the time to turn a page in a book. e. a human lifetime. a. hundred d. billion
c. the length of the workday. b. thousand e. trillion
ANS: C DIF: Difficult REF: 1.1 c. million
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing ANS: D DIF: Easy REF: 1.1
OBJ: 1.1c Explain basic astronomical terms and concepts. MSC: Remembering
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a. Solar System. d. Virgo Supercluster.
TEST BANK FOR 21ST CENTURY ASTRONOMY
b. Milky Way. e. Laniakea Supercluster.
6th Edition by Laura Kay, Stacy Palen, George c. Local Group.
ANS: C DIF: Moderate REF: 1.1
Blumenthal A+ Grade OBJ: 1.1a State our “cosmic address.” MSC: Remembering
CHAPTER 1
Thinking like an Astronomer 5. According to the figure below, if you were to specify your address in the universe, listing
MULTIPLE CHOICES your membership from the smallest to largest physical structures, it would be
1. The Sun is a a. Earth, Local Group, Solar System, Andromeda, the universe.
a. supercluster. d. star. b. Earth, Solar System, Local Group, Milky Way, the universe.
b. moon. e. planet. c. Earth, Solar System, Milky Way, Local Group, Laniakea Supercluster, the universe.
c. galaxy. d. Earth, Solar System, Milky Way, Laniakea Supercluster, the universe.
ANS: D DIF: Easy REF: 1.1 e. Earth, Laniakea Supercluster, Milky Way, Solar System, the universe. ANS: C DIF:
OBJ: 1.1a State our “cosmic address.” MSC: Remembering Difficult REF: 1.1
2. The number of planets in our Solar System is OBJ: 1.1a State our “cosmic address.” MSC: Understanding
a. six. d. twelve.
b. eight. e. twenty.
c. nine.
ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Remembering
3. Milky Way is the name of
a. our Solar System. d. the supercluster of galaxies we are in.
b. the galaxy in which we live. e. the entire universe.
c. the local group of galaxies we are in.
ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Understanding
4. Our galaxy and the few dozen nearest galaxies are known as the 6. The Andromeda Galaxy is also part of the Local Group, so it is also part of
A+ Page 1 A+ Page 2
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a. the Solar System. d. the Virgo Supercluster. a. 8 seconds d. 8 days
b. the Milky Way. e. dark energy. b. 8 minutes e. 8 years
c. the Moon. c. 8 hours
ANS: D DIF: Difficult REF: 1.1 ANS: B DIF: Easy REF: 1.1
OBJ: 1.1a State our “cosmic address.” MSC: Understanding OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
7. According to the figure below, Earth is located approximately 10. One of the nearest stars, Alpha Centauri, is 4.4 light-years from Earth. The time it takes
light to travel from Alpha Centauri to us is
a. 1.25 seconds. d. 600 years.
b. 8.3 minutes. e. 2.2 million years.
c. 4.4 years.
ANS: C DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
a. at the center of the Milky Way.
b. near the center of the Milky Way. 11. The time it takes light to cross Neptune’s orbit is closest to which of the following?
c. about halfway out from the center of the Milky Way. a. instantaneous
d. at the farthest outskirts of the Milky Way. b. a second
e. outside the Milky Way, which is why we can see it as a band across the night sky. c. a quick meal
ANS: C DIF: Easy REF: 1.1 d. a night’s sleep
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing e. the time between presidential elections
ANS: D DIF: Easy REF: 1.1
8. When a change occurs on the surface of the Sun, how long does it take before OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing
astronomers on Earth can see the change?
a. 8 minutes d. 1 day 12. A light-hour is a measure of
b. 11 hours e. It reaches us instantaneously. a. time. d. speed.
c. 1 second b. distance. e. acceleration.
ANS: A DIF: Easy REF: 1.1 c. energy.
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying ANS: B DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding
9.
takes approximately to reach Earth.
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13. If one thinks about the distance between Earth and the Moon, 384,400 km, approximately ANS: D DIF: Difficult REF: 1.1
how much of that distance would Saturn and its rings take up? OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
a. much more than this distance
b. less than half this distance 17.
c. more than half this distance How long does it take light to travel from Alpha Centauri to us?
d. exactly this distance a. 1.25 seconds d. 560 years
e. None of these choices is correct. b. 8.3 minutes e. 6,200 years
ANS: B DIF: Moderate REF: 1.1 c. 4.4 years
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding ANS: C DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
14. The diameter of the Moon is
a. larger than the distance across the continental United States. 18. A light-year is a unit commonly used in astronomy as a measure of
b. roughly equal to the longest distance across Texas. a. time. d. distance.
c. more than half the distance across the continental United States. b. speed. e. acceleration.
d. less than half the distance across the continental United States. c. mass.
e. None of these choices is correct. ANS: D DIF: Moderate REF: 1.1
ANS: C DIF: Moderate REF: 1.1 OBJ: 1.1b Express astronomical distances and distance scales. MSC: Understanding
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering
19. How many times larger is our galaxy (100,000 light-years across) than our Solar System
15. What is the approximate number of stars in the Milky Way? (11 light-hours across)?
a. 10 million d. 300 billion
b. 300 million e. 1 trillion a. 100 d. 106
c. 10 billion b. 1,000
ANS: D DIF: Moderate REF: 1.1 c. 10,000 e. 108
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering ANS: D DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
16.
How long does it take light to travel from Andromeda to us? 20. After the Sun, the next nearest star to us is approximately away.
a. 4.4 years d. 2.5 million years a. 8 light-seconds d. 4 light-years
b. 360 years e. 4.5 billion years b. 80 light-minutes e. 200 light-years
c. 1.2 thousand years c. 40 light-hours
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ANS: D DIF: Moderate REF: 1.1 22. Light from the Andromeda Galaxy that is just reaching us first left Andromeda when
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering a. the woolly mammoth last walked the Earth.
b. humans began exploring the skies with telescopes.
21. The figure below measures distances in the amount of time it takes light to travel. If the c. Homo erectus first walked the Earth.
circumference of Earth is a snap of your fingers (1/7 second), the diameter of the Solar System is d. the Solar System formed.
approximately equal to e. the universe began.
ANS: C DIF: Difficult REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
23.
1023 m away) to us?
a. 7,000 years d. 12 million years
b. 54,000 years e. 54 million years
c. 120,000 years
ANS: E DIF: Moderate REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Applying
24. The speed of light is approximately
a. 3,000 km/s. d. 3 million km/s.
b. 30,000 km/s. e. 3 billion km/s.
c. 300,000 km/s.
ANS: C DIF: Easy REF: 1.1
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Remembering
a. the length of a quick lunch. d. the time you spent in high school. 25. Our universe is approximately 13.7 years old.
b. the time to turn a page in a book. e. a human lifetime. a. hundred d. billion
c. the length of the workday. b. thousand e. trillion
ANS: C DIF: Difficult REF: 1.1 c. million
OBJ: 1.1b Express astronomical distances and distance scales. MSC: Analyzing ANS: D DIF: Easy REF: 1.1
OBJ: 1.1c Explain basic astronomical terms and concepts. MSC: Remembering
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