Vocab

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Across
  1. 2. tectonic plates move away from each other, usually forms new crust and rift valleys
  2. 5. tectonic plates move toward each other, usually forms mountains and volcanoes
  3. 7. name of the ancient supercontinent when it was all one landmass
  4. 9. extinction events that occur over a longer time period
  5. 10. large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate boundaries
  6. 11. rock formed when lava or magma cools and hardens
  7. 13. instruments used to measure and record seismic waves
  8. 15. forms after weathering and erosion when sediments compact and cement
  9. 16. where tectonic plates SLIDE past each other. Causes earthquakes
  10. 17. new oceanic crust is formed as tectonic plates slide pull apart and magma rises
  11. 18. formed as a result of high temperature and pressure deep within earth changing a rock that already existed
Down
  1. 1. formed at plate boundaries usually when plates collide
  2. 3. hot material rises, cooler materials sink. it dives plate tectonics
  3. 4. sudden events that led to a mass extinction
  4. 6. a group of the same species living in the same time
  5. 8. the semi- fluid layer of the mantle where convection currents happen
  6. 12. includes the crust and upper part of the mantle, and is divided into tectonic plates
  7. 14. located between the mantle and the outer core