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Quiz

Chapter 07

Lisa Ye 61 perguntas

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Perguntas do quiz (61)

  1. 1Based on the solar atmosphere and outer layers of the sun, select all of the correct statements from the following list.
    1. AThe solar wind is ionized gas streaming away from the sun.
    2. BHelioseismology is the study of "sunquakes."
    3. CThe temperature of the corona is millions of degrees.
    4. DThe photosphere is the outermost layer of the sun.
    5. ESpicules and filaments are found in the solar corona.
    6. FGranulation is caused by convection.
    7. GThe chromosphere is the visible surface of the sun.
  2. 2Based on nuclear fusion in the sun, select all of the correct statements from the following list.
    1. ANeutrinos oscillate among three different types.
    2. BDuring the proton-proton chain, helium is made into hydrogen.
    3. CGamma rays produced by fusion make it to the solar surface much faster than neutrinos.
    4. DFor nuclei to combine, temperatures must be very high.
    5. EThe number of neutrinos observed to be coming from the sun is the amount we expect.
    6. FDue to the required temperatures, fusion occurs only in the core of the sun.
  3. 3What evidence do we have that the granulation seen on the sun's surface is caused by convection?
    1. AThe bright centers of granules are cooler than their dark boundaries and Doppler measurements indicate that the centers are rising and edges are sinking.
    2. BThe bright centers of granules are cooler than their dark boundaries.
    3. CThe bright centers of granules are hotter than their dark boundaries.
    4. DDoppler measurements indicate that the centers are rising and edges are sinking.
    5. EThe bright centers of granules are hotter than their dark boundaries and Doppler measurements indicate that the centers are rising and edges are sinking.
  4. 4Which layer of the sun's atmosphere contains the cooler low-density gas responsible for absorption lines in the sun's spectrum?
    1. Aphotosphere
    2. Bchromosphere
    3. Ccorona
    4. Dsolar wind
    5. EAll of these choices are correct.
  5. 5Which of the following is true about granules and supergranules?
    1. AGranules and supergranules each fade in about 10 to 20 minutes and they are both due to convection cells in layers below.
    2. BThey are both about the same size and they are both due to convection cells in layers below.
    3. CGranules and supergranules each fade in about 10 to 20 minutes.
    4. DThey are both about the same size.
    5. EThey are both due to convection cells in layers below.
  6. 6This diagram explains the structure of solar granules. Why is the center of a granule brighter than its edges?Imagem da pergunta 6
    1. AThe surface elevation is higher at the center.
    2. BThe temperature is lower at the center.
    3. CThe surface elevation is lower at the center.
    4. DThe surface elevation is higher at the center and the surface elevation is lower at the center.
    5. EThe temperature is higher at the center.
  7. 7What is revealed by observing the sun at a very narrow range of wavelengths within the 656-nm hydrogen alpha line?
    1. Athe structure of the photosphere
    2. BWe can see the electrons make the transition from energy level 3 to level 2.
    3. Cthe structure of the corona
    4. DNothing is seen; all light is absorbed at this wavelength.
    5. Ethe structure of the chromosphere
  8. 8The sun's atmospheric layers are all less dense than its interior. Based on this figure, which layer of the sun is responsible for the absorption lines in the solar spectrum?
    Imagem da pergunta 8
    1. Aphotosphere
    2. Bcorona and chromosphere
    3. Ccorona
    4. DAll the layers are responsible.
    5. Echromosphere
  9. 9What are the general trends in temperature and density from the photosphere to the chromosphere to the corona?
    1. AThe temperature decreases and density increases.
    2. BThe temperature decreases and density decreases.
    3. CThe temperature increases and density decreases.
    4. DThe temperature and density remain constant.
    5. EThe temperature increases and density increases.
  10. 10What physical property of the sun is responsible for "limb darkening"?
    1. AThe chromosphere is hotter than the photosphere and the lower photosphere is hotter than the upper photosphere.
    2. BThe lower photosphere is cooler than the upper photosphere.
    3. CThe lower photosphere is hotter than the upper photosphere.
    4. DThe chromosphere is cooler than the photosphere.
    5. EThe chromosphere is hotter than the photosphere.

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Quiz sobre Chapter 07, criado por Lisa Ye em 26-02-2018.
Autor
Lisa Ye
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English
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