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