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Twelfth Grade (Grade 12) Tectonics Questions

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Grade 12 Tectonics
What does the plate tectonics theory tell us?
  1. continental crust "plows through" oceanic crust.
  2. oceanic crust "slides over" continental crust.
  3. lithospheric plates move.
  4. tectonic forces cause the most damage in the center of the plates.
Grade 12 Tectonics
Subduction tends to form                .
  1. gyres.
  2. trenches.
  3. ridges.
  4. plates.
Grade 12 Tectonics
A tectonic plate segment includes
  1. all of the mantle.
  2. the crust and the asthenosphere.
  3. the upper mantle and the crust.
  4. the mantle and the core.
Grade 12 Tectonics
In comparison to earthquakes at subduction zones, earthquakes at divergent boundaries tend to be                            .
  1. shallower and less intense.
  2. deeper and less intense.
  3. deeper and more intense.
  4. shallower and more intense.
Grade 12 Tectonics
Many of Earth's strongest earthquakes occur in                     .
  1. spreading centers
  2. subduction zones
  3. divergent boundaries
  4. ocean ridges
Grade 12 Tectonics
Transform plate boundaries move                      .
  1. toward each other.
  2. away from each other.
  3. vertically.
  4. horizontally.
Grade 12 Tectonics
A sudden motion of the earth is called                 .
  1. fault vibrations
  2. an earthquake
  3. seismic cracking
  4. refraction waves
Grade 12 Tectonics
Convergence of two continental plates causes formation of                 .
  1. mid-ocean ridges
  2. rift valleys
  3. mountain chains
  4. island arcs
Grade 12 Tectonics
Subduction is
  1. where denser plates sink into the mantle.
  2. where ridge valleys form.
  3. occurring mostly in the Atlantic Ocean.
  4. occurring where continental plates diverge.
Grade 12 Tectonics
Long term earthquake predictions are best at predicting
  1. where an earthquake is likely to occur.
  2. how much damage the next earthquake will cause.
  3. when the next earthquake will occur.
  4. how long the next earthquake will last.
Grade 12 Tectonics
A rift valley does NOT form at a(n)                            .
  1. site of continental rifting
  2. divergent plate boundary
  3. mid-ocean spreading center
  4. subduction zone
Grade 12 Tectonics
Secondary waves can travel through which material state?
  1. solid
  2. liquid
  3. gas
  4. all of the above
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