Across
- 3. occurs when divergent plates separate; convection currents cause less dense material to rise; creates new ocean floor
- 9. survival specialists
- 11. layer that lies between the Earth's crust and core.
- 12. tectonic plates collide
- 15. movement is caused within a liquid when the hotter, less dense material rises and cooler, denser material sinks
- 17. made from remains of plants and animals
- 23. forms under extreme heat and pressure; appears twisted
- 24. no longer existing
- 25. core innermost layer of the earth; divided into two parts, liquid outer and solid inner
- 26. move side to side through solids only; travel slower than P
- 27. outer part of the earth
- 29. boundary where tectonic plates divide
- 31. compress and squeeze through solids and liquids; travels faster than S
Down
- 1. tectonic plates slide past each other
- 2. Hawaiian islands creation
- 4. sudden release of energy in the lithophere
- 5. the solid, outermost layer of the Earth, lies above the mantle
- 6. water held in the soil in deep reservoirs
- 7. the study of the Earth
- 8. large pieces of lithosphere
- 10. below the lithosphere
- 13. a tool that measures/records details of earthquakes
- 14. forms at convergent boundaries; lava and magma
- 16. forms from pre-existing rocks and fossils; appears layered
- 18. group of animals that occupy an area
- 19. when heat, pressure, cooling, melting, and weathering cause rocks to change from one type to another over time
- 20. lower part of the Earth's mantle, below the asthenosphere
- 21. a solid inorganic material found in nature
- 22. the study of earthquakes and related phenomena
- 28. supercontinent
- 30. forms when molten rock crystallizes and solidifies; appears glassy