Restless Earth Vocab List

123456789101112131415161718192021
Across
  1. 1. New oceanic crust is formed as tectonic plates pull apart and magma rises
  2. 4. Hot material rises, cooler materials sink. It drives plate tectonics
  3. 8. An opening in the Earth's crust through which molten rock is pushed out and creates new rock
  4. 9. Forms after weathering and erosion when sediments compact and cement
  5. 11. Instruments used to measure and record seismic waves
  6. 13. Formed as a result of high temperature and pressure deep within Earth changing a rock that already existed
  7. 14. Includes the crust and upper part of the mantle, and is divided into tectonic plates
  8. 16. Name of the ancient supercontinent when it was all one landmass
  9. 17. A group of the same species living in the same area
  10. 19. Fractures or zones of weakness in the Earths crust
  11. 20. The semi-fluid layer of the mantle where convection currents happen
  12. 21. Rock formed when lava or magma cools and hardens
Down
  1. 2. Sudden events that led to a mass extinction
  2. 3. Deep, elongated depressions in the ocean, often associated with subduction zones
  3. 5. Formed at plat boundaries usually when plate collide
  4. 6. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate boundries
  5. 7. Tectonic plates SLIDE past each other, causes Earth quakes
  6. 10. Tectonic plates move toward each other, usually forms mountains and volcanoes
  7. 12. Tectonic plates move away from each other, usually forms new crust and rift valleys
  8. 15. Extinction events extinction events that occur over a longer time period
  9. 18. Located between the mantle and the outer core