Across
1
Deep narrow valley with steep sides
4
One of seven major landmasses
8
Flat elevated area of land
10
Landform where river meets the sea
11
Cold treeless Arctic plain
Down
2
Largest river in South America
3
Large area covered with trees
5
Low-lying land surrounded by higher ground
6
Tool for finding directions
7
Largest ocean on Earth
9
Height above sea level