ch14 the universe
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Physical Science Ch 14, The Universe, Study GuideTRANSCRIPT
ch14Student: ___________________________________________________________________________ 1. A light-year is a measure of astronomical distance. True False
2. A protostar is an accumulation of gases in outer space that will become a star. True False
3. The core of a star is plasma with the density of solid lead. True False
4. The greater the apparent magnitude, the brighter the star. True False
5. The absolute magnitude considers the brightness of a star when at a standard distance. True False
6. More massive stars tend to use up their supply of hydrogen more rapidly. True False
7. It is known that if there is sufficient dark matter in the universe, then the universe will eventually stop its expansion. True False
8. When a massive star exhausts its supply of hydrogen fuel, it becomes a supernova. True False
9. Red giants are enormously bright because they are extremely hot. True False
10. The location of the celestial meridian is determined by your location. True False
11. Stonehenge is an ancient observatory built in A. ancient Babylon. B. England. C. the Euphrates river valley. D. Greece.
12. Which of the following star colors has the highest temperature? A. blue B. white C. yellow D. red
13. Where a main sequence star is located on the H-R diagram depends on its temperature and its A. distance from Earth. B. composition. C. density of its core. D. mass.
14. About how old is the universe? A. 6.0 billion years B. 10.5 billion years C. 13.7 billion years D. 20 billion years
15. Which type of star has the shortest life span? A. large, very massive B. small, not very massive C. one on the main sequence D. a star about the size of our Sun
16. The difference in brightness between two stars is related to the A. amount of light and energy produced by the stars. B. relative size of the stars. C. distance to the stars. D. All of the above.
17. Nuclear fusion reactions occur in what part of a star? A. core B. radiation zone C. convection zone D. All of the above.
18. Nearby stars appear to move ____ relative to Polaris. A. clockwise B. counter-clockwise C. straight by D. in looping circles
19. Which of the following depends on your location on Earth? A. celestial pole B. celestial meridian C. celestial equator D. All of these depend on your location.
20. Earth rotates A. from west to east. B. from east to west. C. at the same rate as it revolves around the Sun. D. twice each day.
21. How far Polaris appears above the horizon depends on A. the time of night. B. your longitude. C. your latitude. D. your position on the celestial meridian.
22. If the density of the universe is less than a critical value, then A. it might eventually stop expanding. B. it might continue expanding forever. C. it could expand to a fixed size and remain. D. there's probably less dark matter than luminous.
23. Which of the following is evidence for the existence of "dark matter" in the universe? A. The rate of expansion of the universe is speeding up. B. Stars eventually use up their fuel and stop shining. C. The outlying stars in a galaxy appear to rotate more rapidly than expected. D. Either there is no proof that dark matter exists, or there is no way to calculate its abundance.
24. The expected life span of a star the size of the Sun is A. 10 billion years. B. 1 billion years. C. 100 million years. D. 10 million years.
25. Compared to a star like the Sun, a blue-white star A. is more massive. B. has a higher surface temperature. C. burns its fuel at a greater rate. D. All of the above.
26. The eventual fate of our Sun is to become A. a neutron star. B. a supernova. C. a white dwarf. D. a black hole.
27. The Milky Way galaxy is A. spiral. B. elliptical. C. globular. D. spherical.
28. Most of the stars plotted on a H-R diagram are A. red giant stars. B. white dwarf stars. C. cepheid variables. D. main sequence stars.
29. Compared to magnitude 1 star, a star with a magnitude of 2 is A. more than twice as bright. B. less than half as bright. C. ten times as bright. D. less than one tenth as bright.
30. In which part of a newborn star does the fusion reaction occur? A. the core B. the radiation zone C. the convection zone D. in all parts of the star
ch14 Key
1. A light-year is a measure of astronomical distance. TRUE
Blooms Level: 2. Understand Section: 14.01 Tillery - Chapter 14 #1 Topic: Light Year
2. A protostar is an accumulation of gases in outer space that will become a star. TRUE
Blooms Level: 2. Understand Section: 14.02 Tillery - Chapter 14 #2 Topic: Life of a Star
3. The core of a star is plasma with the density of solid lead. TRUE
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #3 Topic: Star Properties
4. The greater the apparent magnitude, the brighter the star. FALSE
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #4 Topic: Star Properties
5. The absolute magnitude considers the brightness of a star when at a standard distance. TRUE
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #5 Topic: Star Properties
6. More massive stars tend to use up their supply of hydrogen more rapidly. TRUE
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #6 Topic: Life of a Star
7. It is known that if there is sufficient dark matter in the universe, then the universe will eventually stop its expansion. FALSE
Blooms Level: 4. Analyze Section: 14.03 Tillery - Chapter 14 #7 Topic: The Universe
8. When a massive star exhausts its supply of hydrogen fuel, it becomes a supernova. FALSE
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #8 Topic: Life of a Star
9. Red giants are enormously bright because they are extremely hot. FALSE
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #9 Topic: Star Properties
10. The location of the celestial meridian is determined by your location. TRUE
Blooms Level: 3. Apply Section: 14.01 Tillery - Chapter 14 #10 Topic: Astronomical Tools
11. Stonehenge is an ancient observatory built in A. ancient Babylon. B. England. C. the Euphrates river valley. D. Greece.
Blooms Level: 2. Understand Section: 14.01 Tillery - Chapter 14 #11 Topic: History of Astronomy
12. Which of the following star colors has the highest temperature? A. blue B. white C. yellow D. red
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #12 Topic: Star Properties
13. Where a main sequence star is located on the H-R diagram depends on its temperature and its A. distance from Earth. B. composition. C. density of its core. D. mass.
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #13 Topic: Astronomical Tools
14. About how old is the universe? A. 6.0 billion years B. 10.5 billion years C. 13.7 billion years D. 20 billion years
Blooms Level: 2. Understand Section: 14.03 Tillery - Chapter 14 #14 Topic: The Universe
15. Which type of star has the shortest life span? A. large, very massive B. small, not very massive C. one on the main sequence D. a star about the size of our Sun
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #15 Topic: Star Properties
16. The difference in brightness between two stars is related to the A. amount of light and energy produced by the stars. B. relative size of the stars. C. distance to the stars. D. All of the above.
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #16 Topic: Star Properties
17. Nuclear fusion reactions occur in what part of a star? A. core B. radiation zone C. convection zone D. All of the above.
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #17 Topic: Star Properties
18. Nearby stars appear to move ____ relative to Polaris. A. clockwise B. counter-clockwise C. straight by D. in looping circles
Blooms Level: 4. Analyze Section: 14.01 Tillery - Chapter 14 #18 Topic: Earth
19. Which of the following depends on your location on Earth? A. celestial pole B. celestial meridian C. celestial equator D. All of these depend on your location.
Blooms Level: 3. Apply Section: 14.01 Tillery - Chapter 14 #19 Topic: Astronomical Tools
20. Earth rotates A. from west to east. B. from east to west. C. at the same rate as it revolves around the Sun. D. twice each day.
Blooms Level: 4. Analyze Section: 14.01 Tillery - Chapter 14 #20 Topic: Earth
21. How far Polaris appears above the horizon depends on A. the time of night. B. your longitude. C. your latitude. D. your position on the celestial meridian.
Blooms Level: 4. Analyze Section: 14.01 Tillery - Chapter 14 #21 Topic: Earth
22. If the density of the universe is less than a critical value, then A. it might eventually stop expanding. B. it might continue expanding forever. C. it could expand to a fixed size and remain. D. there's probably less dark matter than luminous.
Blooms Level: 4. Analyze Section: 14.03 Tillery - Chapter 14 #22 Topic: The Universe
23. Which of the following is evidence for the existence of "dark matter" in the universe? A. The rate of expansion of the universe is speeding up. B. Stars eventually use up their fuel and stop shining. C. The outlying stars in a galaxy appear to rotate more rapidly than expected. D. Either there is no proof that dark matter exists, or there is no way to calculate its abundance.
Blooms Level: 3. Apply Section: 14.03 Tillery - Chapter 14 #23 Topic: The Universe
24. The expected life span of a star the size of the Sun is A. 10 billion years. B. 1 billion years. C. 100 million years. D. 10 million years.
Blooms Level: 2. 3. Apply Section: 14.03 Tillery - Chapter 14 #24 Topic: Life of a Star
25. Compared to a star like the Sun, a blue-white star A. is more massive. B. has a higher surface temperature. C. burns its fuel at a greater rate. D. All of the above.
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #25 Topic: Star Properties
26. The eventual fate of our Sun is to become A. a neutron star. B. a supernova. C. a white dwarf. D. a black hole.
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #26 Topic: Life of a Star
27. The Milky Way galaxy is A. spiral. B. elliptical. C. globular. D. spherical.
Blooms Level: 2. Understand Section: 14.03 Tillery - Chapter 14 #27 Topic: Milky Way Galaxy
28. Most of the stars plotted on a H-R diagram are A. red giant stars. B. white dwarf stars. C. cepheid variables. D. main sequence stars.
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #28 Topic: Astronomical Tools
29. Compared to magnitude 1 star, a star with a magnitude of 2 is A. more than twice as bright. B. less than half as bright. C. ten times as bright. D. less than one tenth as bright.
Blooms Level: 4. Analyze Section: 14.02 Tillery - Chapter 14 #29 Topic: Star Properties
30. In which part of a newborn star does the fusion reaction occur? A. the core B. the radiation zone C. the convection zone D. in all parts of the star
Blooms Level: 3. Apply Section: 14.02 Tillery - Chapter 14 #30 Topic: Life of a Star
ch14 SummaryCategory Blooms Level: 2. 3. Apply Blooms Level: 2. Understa nd Blooms Level: 3. Apply Blooms Level: 4. Analyze Section: 14.01 Section: 14.02 Section: 14.03 Tillery - Chapter 14 Topic: Astronomical Tools Topic: Earth Topic: History of Astronom y Topic: Life of a Star Topic: Light Year Topic: Milky Way Galaxy Topic: Star Properties Topic: The Universe # of Questio ns 1 5 13 11 7 17 6 30 4 3 1 6 1 1 10 4