greys puzzle

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Across
  1. 2. an opening in the earths crust through which molten rock is pushed out and creates new rock
  2. 3. where tectonic plates slide past eachother causes earthquakes.
  3. 6. new oceanic crust is formed as tectonic plates pull apart and magma rises.
  4. 7. formed at plates boundries usually when plates collide
Down
  1. 1. name of the ancient supercontinent when it was all one landmass
  2. 4. fractures or zones of weakness in the earths crust.
  3. 5. deep, elongated depressions in the ocean, often associated with subduction zoness