Across
- 4. Located between the mantle and outer core
- 5. Formed when plates at boundaries collide
- 8. A Sudden event that leads to mass extinction
- 9. deep Elongated depressions in the ocean
- 11. Fracture zones of weakness in Earth's crust
- 13. A group of the same species that live in an area
- 16. An Extinction events that occurs over a longer time period
- 17. The semi fluid layer of the mantle where convection currents happen
- 19. forms after weathering and erosion when sediments compact and cement
- 20. Instruments used to measure and record seismic waves
Down
- 1. when plates move towards each other usually farming mountains and volcanoes
- 2. Rock formed when lava or magma cools or burns
- 3. An opening in the Earth's crust where molten rock comes out and makes new rocks
- 6. Hot material rises and cooler material sinks. it drives plate tectonics.
- 7. plates The large rigid pieces of the lithosphere
- 10. name of the super continent that was once, Earth's landmass
- 12. Includes The crust and upper part of the mantle
- 14. Formed as a result of high temperature and pressure deep within Earth changing a rock that already existed
- 15. When Plates slide past each other causing events like an earthquake.
- 18. When plates move away from each other usually forms new crusts
- 21. New oceanic crust is formed when plates pull and magma rises.