Across
- 3. a small narrow river
- 4. a large area of land that has very little water and very few plants growing on it,many are covered by sand
- 7. a mountain with a large opening at the top through which gases and lava are forced out into the air
- 9. a large hole in the side of a hill or underground
- 12. a large area of open land covered with wild grass
- 13. a large area of land that is thickly covered with trees
- 15. a piece of land that is conpletely surrounded by water
- 17. a place where a stream or river falls from a high place, over a cliff or rock
- 20. an area of land that is higher than the land around it,but not as high as a mountain
- 21. a small area of still water,frogs and ducks usually live here
- 23. a very high hill,often with rocks near the top
Down
- 1. an area of low land that is always soft and wet because there is nowhere for the water to flow away to,wet and muddy
- 2. a deep valley with steep sides of rock
- 5. a natural flow of water that continues in a long line across land to the sea/ocean
- 6. a large mass of ice,formed by snow on mountains,moves very slowly down a valley
- 8. tha mass of salt water that covers most of the earth's surface, there are five of this on our earth
- 10. an area of tropical forest where trees and plants grow very thickly
- 11. a large area of flat land
- 14. the salt water that covers most of the earth's surface and surrounds its continents and islands
- 16. an area of low land between hills or mountains,often with a river flowing through it
- 18. a thick forest in tropical parts of the world that have a lot of rain
- 19. a large area of water that is surrounded by land
- 22. any natural feature of the Earth's surface,such as a hill,a lake etc.