Layers of earth science crossword

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Across
  1. 5. Alfred Wegner theory over
  2. 6. The man who made the Plate tectonic theory
  3. 8. The man who made the continental drift theory
  4. 10. string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean.
Down
  1. 1. The Oceanic and continental crust is on the
  2. 2. a long, narrow ditch.
  3. 3. Feature of some volcanos especially shield volcanos in which a set of linear lines
  4. 4. The massive super continent
  5. 7. A detection system used underwater to measure depth
  6. 9. A fracture or zone of fracture between two blocks of rock