restless earth vocab
Across
- 4. a group of the same species living in the same area
- 5. includes the crust and upper part of the mantle, and is divided into tectonic plates
- 7. extinction events that occur over a longer time period
- 8. Spreading new oceanic crust is formed as tectonic plates pull apart and magma rises
- 10. formed as a result of high tempature and a pressure deep within earth changing a rock that already existed
- 12. located between the mantle and the outer core
- 14. rock formed when lava or magma cools and hardens
- 16. forms after weathering and erosion when sediments compact and cement
- 17. tectonic plates move toward each other, usually forms new mountains and volcanoes
- 18. Large, rigid pieces of the earth´s lithosphere that move and interact with each other along plate boundaries
Down
- 1. formed at plate boundaries usually when plates collide
- 2. the semi-fluid layer of the mantle where convection currents happen
- 3. tectonic move away from each other, usually forms new crust and rift valleys
- 6. instruments used to measure and record seismic waves
- 9. sudden events that led to a mass extinction
- 11. hot materials rises, cooler materials sink. it drives plate tectonics
- 13. where tectonic slide past each other. Causes earthquakes
- 15. Name of the ancient supercontinent when it was all one landmass