Earth's Systems Vocab

2. new oceanic crust is formed as tectonic plates pull apart and magma rises
4. tectonic plates move away from each other, usually forms new crust and rift valleys
5. Name of ancient continent when is was all one landmass
7. located between the mantle and the outer core.
9. formed at plate boundaries usually when plates collide
11. A group of the same species living in the same area
12. fractures or zones of weakness in the Earths crust
15. Includes the crust and upper part of the mantle, and is divided into tectonic plates
18. Sudden events that led to a mass extinction
19. an opening in the Earths crust though which molten rock is pushed out and creates new rock
20. Rock formed when lava or magma cools
21. Large, rigid pieces of earths lithosphere that move and interact with each other along pate boundaries

1. Extinction events that occur over a longer time period
3. Forms after weathering and erosion when sediments compact and cement
6. Instruments used to measure and record seismic waves
8. The semi-fluid layer of the mantle where convection currents happen
10. tectonic plates move toward each other, usually forms mountains and volcanoes
13. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed
14. where tectonic plates SLIDE past each other. Causes earthquakes
16. Deep, elongated depressions in the ocean, often associated with subduction zones
17. Hot material rises, cool materials sink. It drives plate tectonics