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Eighth Grade (Grade 8) Tectonics Questions

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Grade 8 Tectonics
Which of the following describes liquefaction?
  1. the stopping of S-waves by Earth's molten outer core
  2. ice melting during an earthquake, causing flooding
  3. seismic waves shaking sediment, causing it to become more liquid-like
  4. rivers diverted by the motion of earthquakes flooding
Grade 8 Tectonics
How does the Richter scale measure the energy an earthquake releases?
  1. It records the timing of the waves.
  2. It records the distance between the waves.
  3. It records the height of the waves.
  4. It records the type of waves.
Grade 8 Tectonics
Which of the following is NOT a type of collision for convergent plates?
  1. oceanic plate meets continental plate
  2. two oceanic plates collide
  3. two continental plates collide
  4. oceanic plate meets convection current
Grade 8 Tectonics
Continental drift is the theory that continents drift
  1. quickly together.
  2. slowly together.
  3. slowly to their current positions.
  4. to form the new continent Pandora.
Grade 8 Tectonics
Which type of plate boundary causes an earthquake?
  1. divergent
  2. convergent
  3. transform
  4. all of these
Grade 8 Tectonics
The word subduct means                .
  1. to rise above
  2. to sink below
  3. to subtract
  4. to add to
Grade 8 Tectonics
What is the point on Earth's surface directly above an earthquake focus?
  1. focus
  2. circumcenter
  3. epicenter
  4. incenter
Grade 8 Tectonics
What are the two types of body waves?
  1. p-waves and s-waves
  2. fast waves and slow waves
  3. surface waves and underground waves
  4. a-waves and b-waves
Grade 8 Tectonics
The rating system that measures the magnitude of an earthquake.
  1. O'Brien Scale
  2. Richter Scale
  3. Meyers Scale
  4. Fallon Scale
Grade 8 Tectonics
Place the following events in a hypothetical order that could explain the origin of an earthquake. Label the first event with letter "A".
__ Subducting plates cause faults. A. D
__ Jerks along the fault create an earthquake. B. A
__ Rocks along the fault suddenly fracture. C. B
__ One plate subducts beneath the other. D. E
__ Aftershocks are released. E. F
__ A fault locks up and builds up stress. F. C
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