AstronomyLecture3b

AstronomyLecture3b - NAME _ ASTRONOMY TEST # 3 _ 1....

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NAME ________________________________________________________ ASTRONOMY TEST # 3 ___ 1. Prominences occur ? frequently than flares. A.more B.less ___ 2. The number of sunspots increases and decreases during an approximately ?-year Sunspot Cycle. A.5 B.8 C.11 D.13 E.17 ___ 3. Most stars whose masses have been found have been A.black holes B.neutron stars C.pulsars D.white dwarfs E.visual binaries ___ 4. Which of the following is a compact object? A.black hole B.neutron star C.white dwarf D.all of the above are compact objects ___ 5. A ? spectrum consists of narrow, bright regions separated by dark regions. A.emission line B.absorption line C.continuous ___ 6. ? indicate the directions in which matter can flow in a binary system and the shapes of the stars in each binary. A.equipotentials B.accretion disks C.supernovas D.black holes E.neutron stars ___ 7. Warm, large cloud cores tend to favor the formation of ? massive stars. A.less B.more C.stars of both large mass and small mass tend to form in warm, large cloud cores ___ 8. Which of the following planets has a ring system? A.Saturn B.Neptune C.Uranus D.Jupiter E.all of the above planets have ring systems ___ 9. ? stars are members of binary or multiple star systems. A.very few B.some C.most ___ 10. The orbital period of ? is 164.783 years and its period of rotation is 16 hours, 3 minutes. It has a strongly inclined magnetic field. A.Saturn B.Uranus C.Pluto D.Neptune E.Jupiter ___ 11. The temperature of the Sun's corona is due to interactions with the Sun's A.core B.photosphere C.magnetic field D.spicules E.granules ___ 12. A thin gas, seen against a cooler background, produces a ? spectrum. A.emission line B.absorption line C.continuous ___ 13. The "iridium layer" and "shocked quartz" have been used as evidence of A.supernovas B.origin of the Sun C.origin of the Solar System D.extinction causes E.formation of black holes ___ 14. Sunspots are ? than the surrounding surface of the Sun. A.cooler B.hotter C.some sunspots are cooler than their surroundings, others are hotter ___ 15. Sunspots are due to A.helioseismology B.revolution of the planets around the Sun C.Sun magnetism D.subduction of hydrogen into the Sun's surface E.rising plumes of dark, hot material
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___ 16. The atmosphere of ? is mostly molecular nitrogen; it may have a liquid nitrogen, ethane and methane ocean up to a depth of one kilometer, beneath which may be a layer of acetylene. A.Iapetus B.Triton C.Miranda D.Titan E.Mimas ___ 17. Parsecs represent ? measures of distance than light years. A.greater B.smaller ___ 18. Gustav Kirchoff made important discoveries concerning A.star's masses B.fusion reactions C.gravitation D.spectroscopy E.stellar evolution ___ 19. Widmanstatten patterns are especially characteristic of A.stony meteorites B.carbonaceous chondrites C.iron meteorites ___ 20. ? are objects that resemble stars in some respects and planets in others. A.white dwarfs B.brown dwarfs C.neutron stars D.pulsars E.red giants ___ 21. The proton-proton chain refers to
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AstronomyLecture3b - NAME _ ASTRONOMY TEST # 3 _ 1....

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