Earth vocabulary

3. Extinction events that occur over a longer time period
8. Tectonic plates move away from each other, usually forms new crust and rift valleys
10. Forms after weathering and erosion when sediments compact and cement
14. Name of the ancient supercontinent when it was all oe landmass
15. Rock formed when lava or magma cools and hardens
17. Hot material rises, cooler materials rink. It drives plat textonics
18. A group of the same species living in the same area
19. An opening in the Earth's crust through which molten rock is pushed out and creates a new rock
20. Deep, elongated depressions in the ocean, often associated with subduction zones
21. Formed at plate boundaries usually when plates collide

1. New oceanic crust is formed as tectonic plates pull apart and magma rises
2. Includes the crust and upper part of the mantle, and is divided into tectonic plates
4. Where tectonic plates SLIDE past eachother. Causes earthquakes
5. Formed as result of high temperature and pressure deep within earth changing rock that already existed
6. Sudden events that led to a mass extintion
7. Tectonic plate moves toward eachother, usually forms mountains and valcanoes
9. The semi-fluid layer of the mantle where convection currents happen
11. Located between the mantle and the outer core
12. Fractures or zones of weakness in the Earth's crust
13. Large, rigid pieces of the Earth's lithosphere that move and interact with each other along plate bounderies
16. Instruments used to measure and record seismic waves