Earth's system Vocab

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