Alfred Wegner isn't he dead

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Across
  1. 4. what happens at a convergent boundary
  2. 5. Alfred Wengner's theory
  3. 7. who came up with continental drift
  4. 8. when things heat up they get less dense resulting in a ________ current
  5. 10. when one plate goes over the other plate
Down
  1. 1. when two plates move in opposite directions
  2. 2. why do the continents drift
  3. 3. dill _______
  4. 4. a sequence of things in between two of the same thing
  5. 6. when two plates rub against each other
  6. 9. depending on how loosely or tightly Adams are packed this varies
  7. 10. the largest rodent