Earth's system Vocab
Across
- 2. new oceanic crust is formed as tectonic plates pull apart and magma rises.
- 4. formed at plate boundaries usually when plates collide
- 5. the semi-fluid layer of the mantle where convection currents happen
- 7. extinction event that occur over a long time period.
- 8. instruments used to measure and record seismic waves
- 10. large, rigid peices of the Earth's Lithosphere that move and interact with each other along plate boundaries
- 12. deep, elongated depressions in the ocean, often associated with subduction zones
- 14. and opening in the Earth's through which molten rock is pushed out and creates new rock
- 15. where tectonic plates slide past each other. Causes earthquakes.
- 16. rock formed when lava or magma cools and hardens
- 18. fractures or zones of weakness in the Earth's crust
- 19. located between the mantle where convection currents happen
Down
- 1. tectonic plates move towards each other, usually forms mountains and volcanoes
- 2. forms after weathering and erosion when sediments compact and cement
- 3. includes the crust and upper part of the mantle, and is divided into tectonic plates.
- 6. tectonic plates move away from each other, usually forms new crust and rift valleys
- 9. name of the ancient supercontinent when it was all one landmass
- 11. hot material rises, cooler material sinks. It drives plat tectonics
- 13. a group of the same species living in the same area.
- 17. sudden events that led to a mass extinction