Across
1
Large natural stream of water
3
Flat elevated area of land
5
Deep narrow valley with steep sides
7
Raised area of land, smaller than a mountain
8
Seasonal heavy rainfall
9
Largest river in South America
11
Total number of people in an area
Down
2
Area where water covers the soil
4
Long-term weather patterns of an area
5
Piece of land jutting into the sea
6
Cold treeless Arctic plain
10
Tool for finding directions