Across
1
Deep narrow valley with steep sides
4
Largest river in South America
5
Where river meets the sea
7
Large area covered with trees
8
Region near the equator
9
Wearing away of land by water or wind
Down
1
Tool for finding directions
2
Seasonal heavy rainfall
3
Area where water covers the soil
6
Distance north or south of equator
10
Large slow-moving mass of ice
11
Flat elevated area of land
12
Physical features of land