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Topic: Plate tectonics 

Science

 Standard 2.  Understands Earth's composition and structure
  Level III (Grade 6-8)
   Benchmark 4.Knows that the Earth’s crust is divided into plates that move at extremely slow rates in response to movements in the mantle
    Knowledge/skill statements
     1.Knows that the Earth’s crust is divided into plates
     2.Knows that the Earth’s plates move slowly in response to movements in the mantle
  Level IV (Grade 9-12)
   Benchmark 1.Understands the concept of plate tectonics (e.g., the outward transfer of the Earth’s internal heat and the action of gravitational forces on regions of different density drive convection circulation in the mantle; these convection currents propel the Earth’s crustal plates, which move very slowly, pressing against one another in some places and pulling apart in other places)
    Knowledge/skill statements
     1.Understands that the Earth’s crustal plates pull apart in some places and press against one another in other places
     2.Understands that the outward transfer of the Earth’s internal heat drives convection circulation in the mantle
     3.Understands that gravitational forces on regions of different density drive convection circulation
     4.Understands that convection currents propel the Earth’s crustal plates
     5.Understands that the Earth’s crustal plates move slowly
   Benchmark 2.Knows effects of the movement of crustal plates (e.g., earthquakes occur along the boundaries between colliding plates; sea floor spreading occurs where plates are moving apart; mountain building occurs where plates are moving together; volcanic eruptions release pressure created by molten rock beneath the Earth’s surface)
    Knowledge/skill statements
     1.Knows that volcanic eruptions release pressure created by molten rock beneath the Earth’s surface
     2.Knows that earthquakes occur along the boundaries of colliding plates
     3.Knows that sea floor spreading occurs where the plates move apart
     4.Knows that mountain building occurs where plates move together