Earth Structure Crossword
Across
- 2. The solid, outer layer of the Earth that makes up the plates
- 4. The layer of Earth between the liquid outer core and the asthenosphere
- 7. A place on the surface of the Earth where two plates move toward each other, and the oceanic plate plunges beneath the other tectonic plate
- 8. The layer of the Earth between the crust and the core
- 9. The boundary between two tectonic plates that are sliding past each other
- 10. The transfer of thermal energy by the movement of a hot liquid or gas
- 13. A long, undersea mountain range along the floor of oceans where two plates are spreading apart
- 15. The process by which new oceanic lithosphere forms at a mid-ocean ridge as magma rises to fill the crack left by diverging plates
- 16. The name for the single landmass composed of all of the present day continents that existed about 250 million years ago
- 17. The boundary between two tectonic plates that are moving away from each other
Down
- 1. The central part of the Earth below the mantle, composed mostly of iron
- 3. The modern theory that explains that the surface of the Earth is made up of lithospheric plates that move and change shape
- 5. The thin and outermost layer of the Earth above the mantle
- 6. The layer of Earth between the mesosphere and the lithosphere
- 11. The boundary between two tectonic plates that are colliding with each other
- 12. The separating of the Earth into layers
- 14. The catastrophe in Earth history about 4 billion years ago when most of this element melted and sank