Rest Earth Vocabulary list

2. name of the ancient supercontinent when it was all one landmass
8. large, rigid pieces of the earth's lithosphere that move and interact with each other along plate boundaries
10. hot material rises, cooler materials sink(drives plate tectonics)
12. sudden events that led to a mass extinction
13. tectonic plates move away from each other(usually forms new crust and rift valleys)
14. formed as a result of high temperature and pressure deep within the earth changing a rock that already existed
15. located between the mantle and the outer core
16. fractures or zones of weakness in the earth's crust
20. formed at plate boundaries usually when plates collide
21. an opening in the earth's crust through which molten rock is pushed out and creates new rock

1. extinction events that occur over a longer time period
3. a group of the same species living in the same area
4. forms after weathering and erosion when sediments compact and cement
5. the semi-fluid layer of the mantle where convection currents happen
6. new oceanic crust is formed as tectonic plates pull apart and magma rises
7. tectonic plates move toward each other(usually forms mountains and volcanoes)
9. includes the crust and upper part of the mantle and is divided into tectonic plates
11. deep, elongated depressions in the ocean, often associated with subduction zones
17. instruments used to measure and record seismic waves
18. rock formed when lava or magma cools and hardens
19. where tectonic plates slide past each other(causes earthquakes)