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Flashcards

astronomy exam 3

Emma Milausksas English 62 cards

Cards in this deck (62)

  1. 1terrestial planetsmercury, venus, earth, mars
  2. 2jovian planetsjupiter, saturn, uranus, neptune
  3. 3dwarf planetpluto
  4. 4earth's layerscontinental plate, upper and lower mantles, outer core, inner core
  5. 5heat rises from ____ through the _______ to the ______core, mantle, crust
  6. 6the slowing rising heat forms vertical _______ in the _____convection cells, mantle
  7. 7where 2 neighboring cells rise and fall in OPPOSITE directions. the overlaying plates are dragged APART, allowing molten material to rise up and form new crust.divergent plate boundary
  8. 8where 2 neighboring cells rise and fall TOWARD each other and overlaying plates are drawn together. less dense plates rise above the denser plates.convergent plate boundary
  9. 9a combo of weathering and plate tetonics means earth is __________changing all the time
  10. 10the visible, gaseous surface of the sunphotosphere
  11. 11________ are located in the photospheresunspots
  12. 12an active occurence in the Sun that causes light and dark areas in the photosphereconvection
  13. 13the red-colored layer of the Sun above the photosphere that emits an emission spectrumchromosphere
  14. 14the outermost layer if the Sun that is highly ionized. it is the hottest layer due to a strong magnetic fieldcorona
  15. 15giant magnetic storms about the size of Earth on the cooler regions of the photospheresunspots
  16. 16the Sun generates energy through _____nuclear fusion
  17. 17the Sun is ____ times larger than Earth110
  18. 18Earth is ____ times larger than the Moon4
  19. 19Distances and sizes in the solar system are determined and compared using ____ratios
  20. 20____ Moons fit across the Sun440
  21. 21stars can differ insize, luminosity, color, and temperature
  22. 22stars that are FIRST visible as the sun setsfirst magnitude stars
  23. 23stars visible after twilightsecond magnitude stars
  24. 24how bright a star ACTUALLY isabsolute magnitude
  25. 25how bright a star is VIEWED from Earthapparent magnitude
  26. 26m stands for ____apparent magnitude
  27. 27M stands for _____absolute magnitude
  28. 28the more negative/lower the magnitude number the ______ a star isbrighter
  29. 29the more positive/higher a magnitude number is the ______ a star isdimmer
  30. 30stars in the night sky appear different in brightness because of _______distance
  31. 31which is brighter? Rigel: m = -0.01 Spica: m = 1.0Rigel
  32. 32a star is located 10 pc away from Earth when ______m = M
  33. 33a star is located CLOSER than 10 pc from Earth when _________m < M
  34. 34a star is farther than 10 pc when _____m > M
  35. 35pcparsecs
  36. 36spectral types in orderO, B, A, F, G, K, M
  37. 37a diagram that identifies the differ the relationships of stars by their absolute magnitude, temperature, luminosity, and spectral typeH-R Diagram
  38. 38Stars that are found in a band from the upper left to the lower right of an H-R diagramMain sequence stars
  39. 39Stats that are really big, not very hot, and VERY bright.Red giants
  40. 40Stars that are very small, very hot, and NOT very brightWhite dwarfs
  41. 41when long will the lifetime of the Sun be?10 billion years (half used up)
  42. 42what type of star will the Sun become?a white dwarf
  43. 43an explosive event that is created when collapsing outer layers of a star collapes against and bounes outward off the compact collapsed coresupernovae type II
  44. 44what happens to the core after a supernovae is determind by ________mass
  45. 45cores with a mass of 1.4Mo - 3Mo become __________neutron stars
  46. 46cores with a mass GREATER than 3Mo (>3Mo) become ______black holes
  47. 47cores with a remaining mass of 1.4 Mo to 3 Mo that is composed of tightly packed neutronsneutron stars
  48. 48remaining cores with a mass that is greater than 3Mo that continue to collapse onto an infinitely small location in spaceblack holes
  49. 49blackholes are detected by looking at _______x-rays
  50. 50the stellar evolution of a red giant with a SMALL mass (<8m_s)planetary nebula -> white dwarf -> nova OR type 1a supernovae
  51. 51controlled fusion reaction in which the outer layers of the accelerated material are blown off leaving the white dwarf unchangednova
  52. 52an uncontrolled and violent fusion reaction that causes accelerated material from a white dwarf to explode and leave nothing behindtype 1a supernovae
  53. 53stellar evolution of a red giant with a large mass (>8m_s)type 2 supernovae -> neutron star OR a black hole
  54. 54acceration can only be detect in black holes with a _____companion
  55. 55______ occurs when the strong gravitation of a black hole, with a nearby companion, attracts material from its neighbor and spirals it around the black hole which increase the temperature causign the rapidly moving material to emit large amounts of x-ray radiationacceration
  56. 56how many stars are in the Milky Way?100 billion
  57. 57galaxy componetsbulge, disk, halo
  58. 58how long across is the Milky Way?100,000 lightyears
  59. 59The Milky Way is made of ______, _______, and ______.gas, dust, and stars
  60. 60_____ blocks our view of seeing across the galaxydust
  61. 61we are ____ lightyears out from the center of our galaxy25,000
  62. 62it would take _____ years to travel to the center of our galaxy25,000

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Flashcards on astronomy exam 3, created by Emma Milausksas on 03/05/2018.
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Emma Milausksas
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