Earth vocab

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Across
  1. 3. Located between the mantle and the outer core
  2. 5. Extinction events that occur over a longer time period
  3. 7. Tectonic plates move away from each other, usually forms new crust and rift valleys.
  4. 9. Sudden events that led to mass extinction
  5. 11. Includes the crust and upper part of the mantle, and is divided into tectonic plates.
  6. 12. Rock formed when lava or magma cools and hardens
  7. 13. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate boundaries
  8. 14. Tectonic plates move toward each other, usually forms mountains and volcanoes
Down
  1. 1. Hot material rises, cooler materials sink. it drives plate tectonics
  2. 2. The semi-fluid layer of the mantle where convection currents happen
  3. 4. Formed as a result of high temperatures and pressure deep within earth changing a rock that already existed
  4. 6. Instruments used to measure and record seismic waves
  5. 8. A group of the same species living in the same area
  6. 10. Forms after weathering and erosion when sediments compact and cement