Across
- 4. Includes the crust and upper part of the mantle,and is divided into tectonic plates
- 6. Instruments used to measure and record seismic waves
- 8. Extinction events that occur over a longer time period
- 11. Large,rigid pieces of the earths lithosphere that move and interact with each other along plate boundaries
- 13. Sudden events that led to a mass extinction
- 14. where tectonic plates slide past each other.causes earthquakes
- 15. Located between the mantle and the outer core
Down
- 1. A group of the same species living in the same area
- 2. tectonic plates move toward each other,usually forms mountains and valcanoes
- 3. Forms after weathering and erosion when sediments compact and cement
- 5. Hot material rises,cooler materials sink.It drives plate tectonics
- 7. Formed as a result of high temperature and pressure deep within earth changing a rock that already existed
- 9. Rock formed when lava or magma cools and hardens
- 10. The semi-fluid layer of the mantle where convection currents happen
- 12. tectonic plates move away from each other,usually forms new crust and rift valleys