Restless Earth Vocab Crossword

3. located between the mantle and the outer core.
6. rock formed when lava or magma cools and hardens.
7. name of the acienct supercontinent when it was all one landmass.
10. includes crust n upper part of the mantle, and is divided into tectonic plates.
12. forms after weathering and erosion when sendments compact and cement.
14. instruments used to measure and record seismic waves.
16. sudden events that led to a mass extinction.
19. tectonic plates move toward another,usually forms mountains n volcanoes.
20. hot material rises, cooler materials sink, it drives plate tectonics.
21. new oceanic crust is formed as tectonic plates pull apart and magma rises.

1. tectonic plates move away from one another, usually forms new crust n rift valleys.
2. formed as a result of high temp and pressure deep within Earth changing a rock that already existed.
4. extinction events that occur over longer time period.
5. the semi-fluid layer of the mantle where convection currents happen.
8. formed plate boundaries usually when plates collide.
9. where tectonic plates slide past each other
11. fractures or zones of weakness in the earths crust.
13. large, rigid peices of the Earth's lithosphere that move and interact with each other along plate boundries.
15. a group of the same species living in the same area.
17. deep, elongated depressions in the ocean, often associated with subduction zones.
18. an opening in the earths crust through which molten rock is pushed out and creates new rock.