Across
- 2. extinction events Extinction events that occur over a long period
- 3. a group of the same species living in the same area
- 7. located between mantle and outer core
- 9. forms after weathering and erosion when sediments compact and cement
- 11. rock rock that was once one form of rock but has changed to another under the influence of heat, pressure , or some other agent without passing through a liquid phase.
Down
- 1. rock formed when lava or magma cools or harden
- 4. the semi fluid layer of the mantle and where convection currents happen
- 5. Instrument used to measure and record seismic waves
- 6. cycle hot material rises, cooler materials sinks, it drives plate tectonics
- 8. includes crust and upper part of mantle, and is divided into tectonic plates
- 10. extinction events sudden events that led to a mass extinction