Across
- 4. A group of the same species living in the same area
- 6. new oceanic crust is formed as a tectonic plates pull apart and magma rises
- 8. Extinction events that occur over a long time period
- 11. deep elongated depressions in the ocean, often associated with subduction zones
Down
- 1. sudden events that led to a mass extinction
- 2. rock formed when lava or magma cools and hardens
- 3. hot material rises, cooler materials sink. it drives plate tectonics.
- 5. name of the ancient supercontinent when it was all one landmass
- 7. Instruments used to measure and record seismic waves
- 9. Rock formed when lava or magma cools and hardens
- 10. formed after weathering and erosion when sediments compact and cement