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