Unit 5: Tectonic Plates

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Across
  1. 4. type of convergent boundary where two plates collide and the more dense plate subducts below the less dense plate; forms volcanoes, deep ocean trenches, and earthquakes
  2. 6. type of convergent boundary where two plates move towards one another pushing crust upward; forms mountains and earthquakes
  3. 9. states that pieces of the Earth's lithosphere are in slow, constant motion, driven by forces in the mantle
  4. 10. type of convergent boundary where two plates move towards one another, but one plate subducts under; forms volcanoes, mountains, earthquakes
Down
  1. 1. force that pushes away newly created crust away from the mid-ocean ridge
  2. 2. force that occurs when materials move in currents due to the differences in heat and density
  3. 3. boundary where two plates horizontally slide past one another; form earthquakes
  4. 5. boundary where two plates move away from each other; forms mid-ocean ridges and rift valleys
  5. 7. boundary where two plates move towards each other; collide
  6. 8. force that occurs as the edge of a dense tectonic plate sinks beneath a less-dense plate; creates a pull on the rest of the plate behind it