Earth's systems puzzle

3. rock formed from when lava or magma cools and hardens
5. sudden events that led to mass extinction
8. hot material rises, cool material sinks. It drives plate tectonics
11. formed at plate boundaries usually when plates collide
14. includes the crust and upper part of the mantle, an is divided into tectonic plates
16. deep, elongated depressions
17. where tectonic plates slide past each other. causes earthquakes
19. name of the ancient super-continent when it was all one land mass
20. the semi-fluid layer of the mantle and the outer core.

1. forms after weathering and erosion when sediments compact and cement
2. tectonic plates move away from each other, usually forms new crust and rift valleys
4. formed as a result of high temperature and pressure deep within earth changing a rock that already existed
6. tectonic plates move toward each other, usually forms mountains and volcanoes
7. large, rigid pieces of the earth's lithosphere that move and interact with each other along plate boundaries
9. instruments used to measure and record seismic waves
10. Extinction events that occur over a longer time period
12. new oceanic crust is formed as tectonic plates pull apart and magma rises
13. an opening in the earths crust through which molten rock is pushed out and creates new rock
15. a group of the same species living in the same area
18. fractures or zones of weakness in the earths crust