6th grade science

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6th grade science
2010-11-04 16:45:11
Science fish

Inside the Earth
Show Answers:

  1. Tectonic plates consist of
    both continental and oceanic crust
  2. The deep interior of the Earth can be mapped using
    seismic waves
  3. The layer of rock that comprises 67% of Earth's mass
  4. The layer of Earth made mostly of iron
  5. the thin, solid outermost layer above the mantle
  6. the rigid layer made up of crust and upper mantle
  7. the layer made of solid rock that slowly flows
  8. the lower part of the mantle
  9. I am part of the lithosphere, but I move around on top of the asthenosphere. What am I?
    tetonic plate
  10. Which part of the core is liquid?
    outer core
  11. Which part of the core is dense and solid?
    inner core
  12. Wegener thought that all the continents were once together in one large continent called
  13. New oceanic lithosphere forms as a result of
    sea-floor spreading
  14. hypothesis that states that the continents were once one large mass that broke apart
    continental drift
  15. process that takes place at mid-ocean ridges
    sea-floor spreading
  16. part of molten rock at mid-ocean ridges
    magnetic minerals
  17. process of Earths magnetic poles changing places
    magnetic reversal
  18. items that provide evidence that the continents were once closer together
  19. The global positioning system can map the rate of tectonic plate movement using
    radio waves
  20. a possible result of plates moving along a transform boundary is
  21. where two plates collide
    convergent boundary
  22. where two plates are moving away from each other
    divergent boundary
  23. where two plates are moving horizontally past each other
    transform boundary
  24. process of moving layers of rock by heating and cooling
  25. where denser oceanic lithosphere sinks beneath continental lithosphere
    slab pull
  26. where oceanic lithosphere slides downhill due to gravity
    ridge push
  27. What is the amount of force placed on a given material called?
  28. The process by which the shape of a rock changes because of stress is called
  29. When stress squeezes an object it is called
  30. When stress stretches an object it is called
  31. What can form when compression squeezes rocks at a convergent place boundary?
  32. What type of stress occurs at a divergent plate boundary?
  33. The bending of rock layers due to stress is known as
  34. a fold where both ends of the rock layer are horizontal
  35. a downward, troughlike fold in a rock layer
  36. an upward-arching fold in a rock layer
  37. What is a seismograph?
    used to measure the density of the earths layers
  38. The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
    continental drift
  39. Evidence of the continental drift
    the continents fit together
  40. Who is Alfred Wegener?
    He first proprosed the theory of the continental drifts. But it was rejected because he could not explain what force pushed or pulled the continents.
  41. What hardens to form new rock at mid ocean ridges in sea floor spreading?
  42. What is used as evidence for seafloor spreading?
    Magnetic reversal
  43. area where two tectonic plates meet
  44. Types of boundaries
    convergent, divergent, transform
  45. ESSAY

    What is convection?
    Heat transfor by the movement of a heated fluid. Denser fluid sinks to the bottom.
  46. ESSAY

    What sets convection currents into motion?
    Heating and cooling of fluid, changes in fluid's density, and forces all combine to set convection currents into motion
  47. Global Postioning System (GPS)
    used to measure the movement of tectonic plates
  48. What can lead to maountains with sharp jagged peaks?
  49. What is a normal fault caused by?
  50. What causes the hanging wall to move down in relation the footwall?
  51. What is a reverse fault caused by?
  52. What causes the hanging wall to move up in relation to the footwall?
    reverse fault
  53. What is uplift?
    the raising of a rock layer
  54. What is subsidence?
    The sinking of a rock layer.
  55. When rock layers break, the resulting surface they break and slide on is a
  56. When tension pulls rocks apart, it creates a
    normal fault
  57. When opposing forces cause rock to break and move horizontally, they create a
    strike-slip fault
  58. When a fault is not vertical, a hanging wall and a____________are formed.
  59. When tectonic plates collide, folds anf faults can become____________
    mountain ranges
  60. What kind of mountain range is formed when rock layers are squeezed and forced upward?
    folded mountains
  61. What kind of mountain range is formed when tension causes large blocks of crust to drop down?
    fault-block mountains
  62. What kind of mountain is formed when magma rises to the surface and erupts?
    volcanic mountains
  63. What kind of mountains are the Appalachian Mountains?
    folded mountains
  64. What kind of mountains are the Tetons?
    fault-block mountains
  65. What kind of mountains are the Ring of Fire?
    volcanic mountains
  66. What is the rising of the Earth's crust to higher elevations called?
  67. What is the sinking of regions of the Earth's crust to lower elevations?
  68. When the Earth's crust slowly springs back to its original elevation, it is called what?
  69. What happens to the ocean floor the farther the oceanic lithosphere is from a mid-ocean ridge?
    The ocean floor becomes older the farther away it gets from the mid-ocean ridge.
  70. A set of cracks that forms when two tectonic plates are pulling away from each other is known as a what?
    rift zone