Science vocab.

2. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along the plate boundaries
3. Formed at plate boundaries usually when plates collide
6. Extinction events that occur over a longer period of time
8. a group of same species living in the same area
9. Located between the mantle and the outer core
11. Instruments used to measure and record seismic waves
13. New oceanic crust is formed as tectonic plates pull apart and magma rises
15. Forms after weathering and erosion when sediments compact and cement
16. Rock formed when lava or magma cools and hardens
17. Tectonic plates move toward each other, usually forms mountains and volcanoes
20. Name of the ancient supercontinent when it was all one landmass
21. Sudden events that led to a mass extinction

1. Tectonic plates move away from each other, usually forms new crust and rift valleys
4. Hot material rises, cooler materials sink. it drives plate tectonics
5. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed
7. Where tectonic plates slide PAST each other. Causes earthquakes
10. Includes the crust and upper part of the mantle, and is divided into tectonic plates
12. Fractures or zones of weakness in the Earth's crust
14. The semi-fluid layer of the mantle where convection currents happen
18. Deep, elongated depressions in the ocean, often associated with subduction zones.
19. An opening in the Earth's crust through which molten rock is pushed out and creates new rock