Restless Earth Vocab

6. Fractures or zones of weakness in the Earth's crust.
7. The semi-fluid layer of the mantle where convection currents happen.
8. Tectonic plates move toward each other, usually Forms mountains and volcanoes.
10. Forms after weathering and erosion when sediments compact and cement.
13. Rock formed when lava or magma cools and hardens.
14. Deep, elongated depressions in the ocean, often associated with subduction zones.
17. New oceanic crust is formed as tectonic plates pull apart and magma rises.
18. Where tectonic plates SLIDE past each other. Causes earthquakes.
20. An opening in the Earth's crust through which molten rock is pushed out and creates new rock.
21. Hot material rises, cooler materials sink. It drives plate tectonics.

1. Extinction events that occur over a longer time period.
2. Sudden events that led to a mass extinction.
3. A group of the same species living in the same area.
4. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate boundaries.
5. Instruments used to measure and record seismic waves.
9. Tectonic plates move away from each other, usually Forms new crust and rift valleys.
11. Name of the ancient supercontinent when it was all one landmass.
12. Formed at plate boundaries usually when plates collide.
15. Includes the crust and upper part of the mantle, and it is divided into tectonic plates.
16. Formed as a result of high temperature and pressure deep within Earth changing a rock that already existed.
19. Located between the mantle and the outer core.