Earth Vocab

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