Across
- 2. forms after weathering and erosion when sediments compact and cements.
- 4. instruments used to measure and record seismic waves.
- 6. includes the crust and upper part of the mantle, and is divided into tectonic plates.
- 7. hot material rises, cooler materials sink.it drives plate tectonics
- 8. rock formed when lava or magma cools or hardens.
- 9. sudden events that led to a mass extinction.
Down
- 1. extinction events that occur over a longer time period.
- 3. formed as a result of high temperature and pressure deep within earth changing a rock that already existed
- 5. a group of the same species living in the same place.