Earth vocab thingy by damon

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