Across
- 4. Rock formed when lava or magma cools and hardens
- 6. hot material rises, cooler materials sink. It drives plate tectonics
- 8. Sudden events that led to a mass extinction
- 9. located between the mantle and outer core
- 10. formed as a result of high temperatures and pressure deep changing rock that already existed
- 11. instuments used to measure the record seismic waves
Down
- 1. extinction events that occur over a longer time
- 2. Includes crust and upper part of the mantle, and is dived into tectonic plates
- 3. A group of the same species living in the same area
- 5. the semi-fluid layer of the mantle and the outer core
- 7. Forms after weathering and erosion and sediments compact and cement