Geography Puzzle

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Across
  1. 3. rocks bounce on the riverbed
  2. 4. the only boy in our class
  3. 5. Capital of Italy
  4. 6. particles are dissolved by the river
  5. 7. Capital of Azerbaijan
  6. 8. a seismic area aorund Paicifc ocean
  7. 9. surname of Harry (wizard)
Down
  1. 1. Seoyeon's favorite term
  2. 2. large rocks are rolled along the riverbed (tractor)
  3. 6. where river starts