Restless Earth Vocab

4. tectonic plates move away from each other, usually forms mountains and volcanoes.
7. hot material rises, cooler material sinks. It drives plate tectonics.
12. located between the mantle and the outer core.
15. name of the ancient supercontinent when it was all one landmass.
18. Extinction Events that occur over a longer period of time.
19. deep, elongated depressions in the ocean, often associated with subduction zones.
20. new oceanic crust is formed as tectonic plates pull apart and magma rises.
21. includes the crust and upper part of the mantle, and is divided into tectonic plates.

1. large, rigid pieces of Earth's lithosphere that move and interact with each other along plate boundaries.
2. rock formed when lava or magma cools and hardens.
3. forms after weathering and erosion when sediments compact and cement.
5. formed at plate boundaries usually when plates collide.
6. sudden events that led to a mass extinction
8. tectonic plates move toward each other, usually forms mountains and volcanoes
9. where tectonic plates SLIDE past each other. Causes earthquakes.
10. formed as a result of high temperature and pressure deep within Earth changing a rock that already existed
11. the semi-fluid layer of the mantle and where convection currents happen.
13. a groups of the same species living in the same area
14. instruments used to measure and record seismic waves
16. an opening in the Earth's crust through which molten rock is pushed out and creates new rock.
17. fractures or zones of weakness in the Earth's crust