restless earth vocab.

8. name of the ancient super continent when it was all one landmass
9. rock formed when lava or magma cools and hardens
13. a group of the same species living in the same area
15. includes the crust and upper part of the mantle and outer core
16. tectonic plates move away from each other, usually forms new crust and rift valleys
17. the semi-fluid layer of the mantle where convection currents happen

1. located between the mantle and outer core.
2. new oceanic crust is formed as tectonic plates pull apart and magma rises
3. formed as a result of high temperatures and pressure within earth changing a rock that already existed
4. hot material rises, cooler materials sink. it drives plate tectonics
5. extinction events that occur over a longer time period
6. forms after weathering and erosion when sediments compact and cement
7. large, rigid pieces of the earths lithosphere that move and interact with each other along plate boundaries
10. sudden events that led to a mass extinction
11. where tectonic plates slide past each other. causes earthquakes
12. plates move toward each other, usually forms mountains and volcanoes
14. instruments used to measure and record seismic waves