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