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Twelfth Grade (Grade 12) Tectonics Questions

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Grade 12 Tectonics
Subduction tends to form
  1. gyres.
  2. trenches.
  3. ridges.
  4. plates.
Grade 12 Tectonics
A tectonic plate segment includes the                                .
  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
The plate tectonics theory states that
  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
Grade 12 Tectonics
Many of the Earth's strongest earthquakes occur in                     .
  1. spreading centers
  2. subduction zones
  3. divergent boundaries
  4. ocean ridges
Grade 12 Tectonics
Transform plate boundaries                          .
  1. move toward each other
  2. move away from each other
  3. move vertically
  4. move horizontally
Grade 12 Tectonics
Grade 12 Tectonics
Subduction is                                                      .
  1. where denser plates sink into the mantle.
  2. where ridge valleys form
  3. occur mostly in the Atlantic Ocean
  4. most frequently occur when continental plates diverge
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
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
In comparison to earthquakes at subductions zones, earthquakes at divergent boundaries are                           .
  1. shallower and less intense
  2. deeper and less intense
  3. deeper and more intense
  4. shallower and more intense
Grade 12 Tectonics
The Richter scale                                           .
  1. is not as accurate as the Mercalli scale
  2. is based on vibrations of the air
  3. measures of the strength of a seismic wave
  4. is a measure of heat
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