vocabulary
Across
- 3. boundary an area where two or more tectonic plates meet.
- 4. Boundary ‐The boundary that occurs where two plates are pushing toward each other.
- 6. melted rock on Earth’s surface.
- 7. the layer of Earth between the core and the crust; the mantle contains the lower part of the
- 10. A crack or fracture in Earth's crust where two tectonic plates grind past each other in a horizontal direction.
- 11. the outermost layer of Earth.
- 14. continents were joined together in one large landmass.
- 16. ‐The border between two tectonic plates.
- 18. plate a large piece of the lithosphere that floats and moves on the asthenosphere.
- 19. This layer of the earth lies between the mantle and the solid inner core. It is the only liquid
- 20. the solid outer part of Earth that includes the crust and upper mantle.
Down
- 1. melted rock beneath Earth’s surface.
- 2. ‐Molten rock that flows beneath the earth's surface and is made up of gases, liquids, and crystals.
- 3. The name given to the supercontinent that existed more than 225 million years ago, in which the
- 5. The type of crust lying under the oceans of the world. It is only 4 to 6 miles
- 6. a sea of mostly iron and nickel about 1,400 miles (2,300 km) thick.
- 8. and all of the asthenosphere.
- 9. is formed when very hot rock rises from the mantle and erupts through Earth’s crust.
- 12. This dense layer of the earth is made of hot, semisolid rock and is located directly below the crust.
- 13. magma reaches the surface, it is called lava.
- 15. trench a long, narrow, deep area on the ocean floor that is formed at a convergent plate boundary.
- 17. Boundary ‐The boundary that occurs where two plates are moving apart from each other.