Restless Earth Vocab List

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Across
  1. 5. tectonic plates move toward each other usually forms mountains and volcanoes
  2. 8. a group of the same species living in the same area
  3. 11. tectonic plates move away from each other usually forms new crust and rift valleys
  4. 13. hot material rises, cooler materials sink it drives plate tectonics
  5. 14. instruments used to measure and record seismic waves
  6. 15. fractures or zones of weakness in the earth crust
  7. 17. large rigid pieces of the earths litosphere that move and interact with each other along plate boundaries
  8. 18. where tectonic plates SLIDE past each other couses earthquakes
  9. 19. the semi-fluid layer of the mantle where convection currents happen
  10. 20. formed at plate boundaries usually when plates collide
  11. 21. rock formed when lava or magma cools and hardens
Down
  1. 1. forms after weathering and erosion when sediments compact and cement
  2. 2. includes the crust and upper part of the mantle and is divided into tectonic plates
  3. 3. new oceanic crust is formed as tectonic plates pull apart and magma rises
  4. 4. located between the mantle and the outer core
  5. 6. an opening in the earths crust through which molten rock is pushed out and creates new rock
  6. 7. extinction events that occur over a longer time period
  7. 9. sudden events that led to a mass extinction
  8. 10. deep elongated depressions in the ocean often associated with subduction zones
  9. 12. name of the ancient supercontinent when it was all one landmass
  10. 16. formed as a result of high temperature and pressure deep within earth