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