tectonic plates

123456789
Across
  1. 3. an opening in the earth's crust through which lava, volcanic ash, and gases escape
  2. 7. a lowland region that forms where Earth's tectonic plates move apart, or rift.
  3. 8. a long narrow hilltop, mountain range, or watershed.
  4. 9. sliding across
Down
  1. 1. sudden movement along faults within the Earth
  2. 2. comes together
  3. 4. a landform that goes above its surroundings
  4. 5. a seafloor mountain system formed by plate
  5. 6. pulls apart