Earth Vocabulary

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Across
  1. 3. The formation of the new areas of the oceanic crust at midocean ridges and its movement on either side
  2. 6. rock that forms when magma cools on he surface or underground
  3. 10. Rock that forms when existing rocks change due to heat and/or pressure
Down
  1. 1. The processes that change the surface of the earth through the movement of the lithospheric plates
  2. 2. Rock that forms when pebbles,sand,shells, and other pieces are cemented together over time
  3. 4. Where two plates move together to form volcanoes, islands, and other landforms
  4. 5. When one tectonic plate pushes underneath another into the mantle where it melts
  5. 7. Movement of magma in the mantle caused by temperature changes that move the lithospheric plates above
  6. 8. When plates scrape past each other causing strong earthquakes
  7. 9. When two plates separate causing underwater volcanic chains and rift valleys