1. Landforms and Biomes

2. Volcano An opening in the earth's crust through which molten lava, ash, and gases are ejected

3. Floodplain An area of low-lying ground next to a river, formed mainly of river sediments and subject to flooding.

4. Plateau An elevated, comparatively level expanse of land; a tableland

5. Canyon A deep gorge, typically one with a river flowing through it, as found in North America.

6. Mountain A large natural elevation of the earth's surface rising abruptly from the surrounding level; a large steep hill.

7. Island A piece of land surrounded by water.

8. Strait A narrow passage of water connecting two seas or two large areas of water

9. Peninsula A piece of land almost surrounded by water or projecting out into a body of water.

10. Plain A large area of flat land with few trees

11. Valley A low area of land between hills or mountains, typically with a river or stream flowing through it

12. River A large natural stream of water flowing in a channel to the sea, a lake, or another stream

13. Lake A large body of water surrounded by land

14. Isthmus A narrow strip of land with sea on either side, forming a link between two larger areas of land.

15. Archipelago A group of islands

16. Ocean A very large expanse of sea, in particular, each of the main areas into which the sea is divided geographically

17. Forest Areas that are dominated by trees and other woody vegetation

18. Savanna A savanna is a rolling grassland scattered with shrubs and isolated trees

19. Tundra It is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons

20. Grassland Grassland biomes are large, rolling terrains of grasses, flowers and herbs

21. Desert Deserts cover about one fifth of the Earth's surface and occur where rainfall is less than 50 cm/year

22. Barren This land is cold year-round, it has thin, poor soil and few animals.