Restless Earth

4. new oceanic crust is formed as tectonic plates pull apart and magma rises
6. sudden events that lead to mass extinction
8. name of ancient supercontinent when it was all one land mass
11. located between the mantle and the outer core
12. a group of the same species living in the same area
13. formed as a result of high temperature and pressure deep within Earth changing a rock that already existed
14. fractures or zones of weakness in the Earth's crust
16. tectonic plates move toward each other usually forms mountains and volcanoes
17. an opening at the Earth's crust through which molten rock is pushed out and creates new rock
19. plates large rigid peices of thr earths lithosphere that move and interact with each other along plate boundaries
20. where tectonic plates slide past each other causes eathquakes
21. deep enlongated depressions in the ocean often associated with subduction zones

1. forms after weathering and erosion when sedimentscompact and cement
2. extinction events that occur over a longer period of time
3. tectonic plates move away from eachother usually forms new crust and rift valleys
5. includes the crust and upper part of the mantle and is divided into tectonic plates
7. rock formed when lava or magma cools and hardens
9. the semi-fluid layer of the mantle where convection currents happen
10. instruments used to measure and recors seismic waves
15. formed at plate boundaries usually when plates collide
18. hot material rises cooler materials sink it drives plate tectonics