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Twelfth Grade (Grade 12) Tectonics Questions

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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
Many of Earth's strongest earthquakes occur in                     .
  1. spreading centers
  2. subduction zones
  3. divergent boundaries
  4. ocean ridges
Grade 12 Tectonics
Subduction tends to form
  1. gyres.
  2. trenches.
  3. ridges.
  4. plates.
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
A sudden motion of the earth is called                 .
  1. fault vibrations
  2. an earthquake
  3. seismic cracking
  4. refraction waves
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
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
Transform plate boundaries move
  1. toward each other.
  2. away from each other.
  3. vertically.
  4. horizontally.
Grade 12 Tectonics
Grade 12 Tectonics
Surface waves transport energy
  1. by compression and expansion.
  2. by shearing.
  3. in a motion similar to ocean waves.
  4. in a random motion.
Grade 12 Tectonics
Why do many scientists use moment magnitude instead of the Richter scale to measure earthquake energy?
  1. The Richter scale can be inaccurate for earthquakes that shake a long time.
  2. The Richter scale is affected by the quality of building construction.
  3. The Richter scale had a limited range of values and can't measure the strongest earthquakes.
  4. All of the above
Grade 12 Tectonics
Primary waves travel
  1. faster than surface waves.
  2. slower than secondary waves.
  3. at the same rate as surface waves.
  4. slower than surface waves.
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