Hills are Alive

1234567891011
Across
  1. 2. A study of the physical features of the earth.
  2. 5. An area of high, flat ground.
  3. 6. A mountain that can erupt.
  4. 10. The rising and falling of the sea.
  5. 11. Hot liquid within the earth's crust.
Down
  1. 1. A large steep hill.
  2. 3. A line of mountains.
  3. 4. The movement of water.
  4. 7. A small river.
  5. 8. A large area of water.
  6. 9. The pointed top of a mountain.