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