Across
1
Largest ocean on Earth
4
Low area between mountains
7
Area where water covers the soil
8
Flat grassland in tropical regions
9
Imaginary line around the middle of Earth
11
Largest hot desert in the world
Down
2
Deep narrow valley with steep sides
3
Large slow-moving mass of ice
5
Land surrounded by water on three sides
6
Cold treeless Arctic plain
10
Physical features of land