ASTRONOMY 1H (Part 2)

  1. (Week 6) Everything surrounding the Pacific Ocean is often called the what?
    Ring of Fire; Due to the volcanic activity associated w/ those plate boundaries
  2. (Week 6) Which cloud type has no stars close by?
    • Emission Nebulae
    • Reflection Nebulae
    • -->Dark Nebulae
  3. (Week 6) Which cloud type has a Glow with their own light and is Always Red in true color pictures?
    • -->Emission Nebulae
    • Reflection Nebulae
    • Dark Nebulae
  4. (Week 6) Which cloud type reflects the light of nearby stars and is usually Blue?
    • Emission Nebulae
    • -->Reflection Nebulae
    • Dark Nebulae
  5. (Week 6) Which planet formed at the nearest location to the Sun that was at a temp below the freezing point of water?
    Jupiter
  6. (Week 6) Which planet initially formed at the outermost location where the temp was high enough for water to be a liquid?
    Mars
  7. (Week 6) The overall composition of the Solar Nebulae is thought to have been very similar to the composition today of:
    the Outer Layers of the Sun
  8. (Week 6) The densities of planets far from the Sun are high or low and why?
    Low because they became massive enough while forming to hold onto H and He
  9. (Week 6) If you are standing on Mars, Earth is a(n) _______ planet
    Inferior
  10. (Week 6) When is the best time to observe an inferior planet (Venus or Mercury)?
    Greatest elongation; Displays full range of phases
  11. (Week 6) An active planet would most likely have which of the following?
    • -->Earthquakes
    • Heavy Cratering
    • -->Volcanic Activity
  12. (Week 6) How do we know what the interior of the Earth looks like?
    By studying earthquakes
  13. (Week 6) Earth's core is ______
    Liquid in the Outer core, Solid in the Inner part
  14. (Week 6) What is the most likely scenario for the origin of the Moon?
    It formed after the Earth was hit w/ a Mars-sized rogue planet (Giant Impact Theory)
  15. (Week 6) The Moon is currently an active planet. True or False?
    False; it is a Dead planet
  16. (Week 6) What causes the continental and oceanic plates to move around?
    Convection in the mantle
  17. (Week 6) What is the correct order of steps in the formation sequence of a terrestrial planet?
    Solar Nebular Collapse --> Condensation of grains --> Accretion of Planetesimals --> Clearing of Debris
  18. (Week 6) There are originally 4000 atoms that have a half-life of 1000 years. How many of the original atoms will be left after 2000 years?
    1000
  19. (Week 6) What is the best interpretation of this cratering map?
    Image Upload 1
    • Uniformly young
    • Uniformly old
    • Lower region resurfaced
    • -->Upper region resurfaced
  20. (Week 7) The "limb" is the sideways angle (the edge) at which you're looking at a celestial body. True or False?
    True
  21. (Week 7) Mercury has scarps due to...
    rapid shrinking of its core
  22. (Week 7) The surface of Venus can only  been seen with radar because...
    the planet has a cloud cover too thick to see through
  23. (Week 7) Venus has fewer/more craters than the Moon?
    Fewer
  24. (Week 7) Jovian planets are made entirely of gas. True or False?
    False; called "Gas Giants", but most of their material is in liquid form, not gas
  25. (Week 7) As you go deeper in Jupiter's atmosphere, the pressure decreases. True or False?
    False; it increases
  26. (Week 7) Mars has a surface very similar to the Moon. True or False?
    False; Mars has a surface a little more similar to Earth
  27. (Week 7) There are indications that Mars has had liquid water on its surface in the past. True or False?
    True
  28. (Week 7) Which terrestrial planet likely once had conditions conductive (beneficial) to life?
    Mars
  29. (Week 7) Which planets have High density and Solid surfaces?
    Terrestrial
  30. (Week 7) Which planets have Rapid rotation, Ring systems, and Strong magnetic fields?
    Jovian
  31. (Week 7) What makes the rotation of Venus most different from all the other planets in the Solar system?
    It is backwards
  32. (Week 7) Uranus and Neptune's blue color is due to the presence of high levels of what?
    Methane
  33. (Week 7) Helium condenses and rains down on Saturn's center, producing what?
    Heat
  34. (Week 7) Why does Venus have a runaway greenhouse effect while Earth does not?
    Earth has oceans
  35. (Week 8) Callisto shows no evidence of internal activity. True or False?
    True
  36. (Week 8) Is Eris a Planet, Dwarf Planet, Moon, or a Small Solar System body?
    Eris is a Dwarf Planet
  37. (Week 8) Is Ceres a Planet, Dwarf Planet, Moon, or a Small Solar System body?
    Ceres is a Dwarf Planet
  38. (Week 8) Is Eros a Planet, Dwarf Planet, Moon, or a Small Solar System body?
    Eros is a Small solar system body
  39. (Week 8) Is Ganymede a Planet, Dwarf Planet, Moon, or a Small Solar System body?
    Ganymede is a Moon
  40. (Week 8) Enceladus is, like its sister moon Mimas, a dead world. True or False?
    False; Enceladus is active with Cryovolcanism
  41. (Week 8) Europa shows that it experiences tidal heating with its what?
    • Subsurface Ocean
    • Smooth, Cracked Surface
  42. (Week 8) The Galilean moons mirror the condensation sequence of the solar nebula with their decreasing _____ with distance from Jupiter.
    Density
  43. (Week 8) Io has strong tidal heating because it has a(n) ______ orbit
    Elliptical
  44. (Week 8) Why is it that Pluto & Neptune could never collide?
    They have a 3:2 orbital resonance
  45. (Week 8) The discovery of Pluto's moon Charon allowed astronomers to calculate Pluto's ________
    Mass
  46. (Week 8) "Irregular" moons commonly have _________ orbits
    Retrograde orbits
  47. (Week 8) What causes a ring to be narrow & confined?
    Shepherd moons
  48. (Week 8) Which moon(s) of Saturn show evidence of internal activity?
    • Enceladus
    • Titan
  49. (Week 8) Which substance exists at its "triple point" on Titan?
    Methane
  50. (Pop Quiz) What protects the Earth from the Solar Wind?
    Magnetic Field
  51. (Pop Quiz) Where is the lighter material? Crust, Mantle, or Core?
    Crust
  52. (Pop Quiz) As you go deeper in a Jovian planet, the pressure and temp ________
    Increases
  53. (Pop Quiz) The most common element in Jovian planets is ________
    Hydrogen
  54. (Pop Quiz) Terrestrial planets have weaker/stronger/the same  magnetic fields than/as Jovian planets?
    Weaker
  55. (Week 9) If you add up all of the mass in the Asteroid belt, it is actually way more than Mercury's mass. More than enough mass to make a planet. True or False?
    False; Way less than Mercury's mass if added up together --- Was never enough mass there to make a planet
  56. (Week 9) Most asteroids are too small to have internal heat to drive any kind of resurfacing. Only thing that changes them is impacts and/or weathering by solar winds (have no protection from that). True or False?
    True; otherwise, pretty pristine samples/fossils/building blocks in formation of solar system/pieces of original Solar Nebula
  57. (Week 9) Asteroids are only cosmic catastrophe we have power to save ourselves from. True or False?
    True; We can track them, plot where they will be, and divert/nudge them away from our path
  58. (Week 9) Radial Velocity method can only pick up a small percentage of all the planets (exoplanets) that are out there. True or False?
    True; This is due to the fact that it needs to be lined up correctly in our line of sight and the movement needs to go towards us and away from us (the "wobble")
  59. (Week 9) 51 Pegasi b is an example of a what?
    A planet (specifically a Hot Jupiter); if it were to be an uppercase "B" or "A", that would represent a binary star
  60. (Week 9) Certain groups of asteroids are known as asteroid families. They are asteroids that...
    Originated in the same catastrophic collision
  61. (Week 9) The Kirkwood Gaps in the main asteroid belt exist due to _______
    Orbital resonances with Jupiter
  62. (Week 9) Properties for Ecliptic Comets
    • Orbits the Sun
    • Low inclination orbit (near the ecliptic)
    • Mostly prograde orbits
  63. (Week 9) Properties for Isotropic Comets
    • Orbits the Sun
    • Long period (1000s of years)
    • Often the most bright and spectacular of comets
    • Originate in the Oort Cloud
  64. (Week 9) Near-Earth asteroids...
    • Could crash into a Terrestrial Planet
    • Could be ejected from the Solar System
  65. (Week 9) The existence of extrasolar planets is typically known through...
    Effects on Parent Star
  66. (Week 9) The location of a star's habitable zone depends on its...
    Temp
Author
tatiyvonne
ID
354878
Card Set
ASTRONOMY 1H (Part 2)
Description
Astronomy 1H (Part 2)
Updated