Across
- 1. Where tectonic plates slide pass each other
- 3. Large, rigid pieces of the earths lithosphere that move and interact with each other along the plate boundaries
- 5. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed
- 9. Rock formed when lava or magma cools and hardens
- 10. located between the mantle and the outer core
- 11. tectonic plates move away from each other
- 12. Fractures or zones of weakness in the earths crust
- 13. new oceanic crustis formed as tectonic plates pull apart and magma rises
- 16. An opening in earths crust through when molten rock is pushed out and creates a new rock
- 17. Hot material rises, cooler material sinks. It dives plate tectonics
- 18. Name of the ancient supercontinent when it was all one land mass
- 19. Deep, elongated depessions in the ocean
- 20. Instruments used to measure and record seismic waves
Down
- 2. Sudden events that led to a mass extinction
- 4. Includes the crust and upper part of the mantle, and is divided into tectonic plates
- 6. formed by plate countries usually when plates collide
- 7. Tectonic plates that move toward each other
- 8. Extinction events that occur over a long lime period
- 14. The semi-fluid layer of the mantle where the convection currents happen
- 15. A group of the same species living in the same area
- 21. Forms after weathering and erosion when sediments compact and cement