Earth Vocab

3. New oceanic crust is formed as tectonic plates pull apart and magma rises.
8. Name of the ancient supercontinent when it was all one landmass.
9. Sudden events that led to a mass extinction
10. Instruments used to measure and record seismic waves
13. Tectonic plates move away from each other, usually forms new crust and rift valleys
14. Includes the crust and upper part of the mantle,and is divided into tectonic plates
18. Hot material rises, cooler materials sink.It drives plate tectonics
19. An opening in the Earth's crust though which molten rock is pushed out and creates new rock.
20. Tectonic plates move toward each other, usually forms mountains and volcanoes
21. where tectonic plates SLIDE past each other. Causes earthquakes

1. Formed at plate boundaries usually when plates collide.
2. Extinction events that occur over a longer time period
4. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed
5. Rock formed when lava or magma cools and hardens
6. The semi-fluid layer of the mantle where convection currents happen
7. Deep, elongated depressions in the ocean, often associated with subduction zones.
11. A group of the same species living in the same area
12. Fractures or zones of weakness in the Earth's crust.
15. Located between the mantle and the outer core
16. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate bondaries
17. Forms after weathering and erosion when sediments compact and cement