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