Restless Earth Vocab

2. includes crust and upper part of the mantle and is divided int tectonic plates
5. formed as a result of high temperature and pressure deep within earth changing a rock that already existed
7. an opening in the earth's crust through which molten rock is pushed out and creates new rock
8. rock formed when lava or magma cools and hardens
12. large rigid pieces of earths lithosphere that move and interact with each other along plate boundaries
14. a group of the same species living in the same are
16. formed at plate boundaries usually when plates collide
18. forms after weathering and erosion when sediments compact and cement
19. fractures or zones of weakness in the earths crust
21. tectonic plates move away from each other usually forms new crust and rift valleys

1. located between the mantle and outer core
3. extinction events that occur over a longer period of time
4. tectonic plates move away from each other usually forming mountains and volcanoes
6. hot material rises cooler material sinks driving plate tectonics
9. the semi fluid layer of the mantle where convection currents happen
10. where tectonic plates slide past each other causing earthquakes
11. new oceanic crust is formed as tectonic plates pull apart and magma rises
13. name of the super continent when it was all one landmass
15. instruments used to measure and record seismic waves
17. deep elongated depressions in the ocean often associated with subduction zones
20. sudden events that led to mass extinction