Earth

2. Exticnction events that occur over a longer time period
3. Rock formed when lava or magma cools and hardens
9. tectonic plates move away from each other, usually forms new crust and rift valleys
10. formemnd at plate boundaries usually when plates colide
11. Large rigid pieces of the earth's lithosphere that move and interact with each other along plate boundaries
14. Instruments used to measure and record seismic waves
16. Fractures or zones of weakness in the Earth's crust
17. located between mantle and the outer core
19. the semi fluid layer of the mantle where convection currents happen
20. new oceanic crust is formed as tectonic plates pull apart and magma rises
21. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed

1. tectonic plates move toward each other usually forms mountains and volcanoes
4. an opening in the earth crust trough which molten rock is pushed out and creates new rock
5. Name of Acident supercontinent when it was all one landmass
6. Sudden events that led to a mass extinction
7. Hot material rises, cooler material sink. It drives plate tectonic
8. tectonic plates slide past each other causes earthquakes
12. Deep elongated depressions in the ocean often associated with subduction ones
13. Includes the crust and upper part of mantle and is divided into tectonic plates
15. Forms after weathering and erosion when sediments compact and cement
18. A group of the same species living in the same area