waves choiceboard

6. instruments used to measure and record seismic waves
9. formed at plate boundaries usually when plates collide
11. includes the crust and upper part of the mantle and is divided into tectonic plates
15. large Rigid pieces of the Earth's lithosphere that move and interact with each other along plate boundries
16. name of the ancient supercontinent when it was all one landmass
17. a group of the same species living in the same area
18. deep elongated depressions In the ocean often accociated with subduction
19. where tectonics plates slide past each other causes earthquakes
20. rock formed when lava or magma cools and hardens

1. hot material rises cooler materials sink it drives plate tectonics
2. tectonic plates move towards each other usually forms mountians and volcanoes
3. fractures or zones of weakness in the Earth's crust
4. an opening in the Earth's crust through which molten rock is pushed out and creates new rock
5. extinction events that occur over a longer time
7. forms after weathering and erosion when sediments compact and cement
8. located in-between the mantle and outer core
10. formed as a result of high temperature and pressure deep within earth changing a rock that already existed
12. new oceanic crust is formed as tectonic plates pull apart and magma rises
13. sudden events that led to a mass extinction
14. the semi fluid layer of the mantle where convection currents happen