Restless earth vocab
Across
- 1. rock formed from high temp and pressure
- 3. located between the mantle and outer core
- 5. new oceanic crust through which molten rock is pushed out and creates new rock
- 6. extinction that occurs over a long time
- 10. large rigid pieces of the earths lithosphere that move and interact with each other along plate boundaries
- 12. a group or species living in the same area
- 13. tectonic plates slide past each other. causes earthquakes
- 15. tectonic plates move away from each other. usually forms ew crust and rift valleys
- 17. crust and upper part of mantle divided into plates
Down
- 2. sudden events that led to a mass extinction
- 4. hot material rises, cooler sinks. drives plate tectonics
- 7. the semi-fluid layer of the mantle where convection currents happen
- 8. rock formed when lava or magama cools or hardens
- 9. instruments used to measure and record seismic waves
- 11. tectonic plates move towards each other. forms mountains and volcanoes
- 14. fractures or zones of weakness in the earths crust
- 16. deep elongated depressions in the ocean often associated with subduction zones
- 18. rock formed after weather and erosion when sediments compact