Solve these clues to fill the grid.
- Condition in which the earth's surface is worn away by the action of water and wind
- 2 Across
- Mountain that erupts with lava (plural)
- 3 Across
- A ravine formed by a river in an area with little rainfall (plural)
- 6 Across
- Rock that in its molten form issues from volcanos
- 7 Across
- To make something different (plural)
- 8 Across
- A land mass that projects well above its surroundings
- 1 Down
- A long depression in the surface of the land that usually contains a river
- 3 Down
- A land mass that is surrounded by water
- 4 Down
- Long stream of water flowing to the sea
- 5 Down
- Hard outer layer of the Earth or of bread
- 8 Down
- Tiny grains found on beaches
- 9 Down