Across
1
Vast body of salt water
4
Region surrounding the North Pole
5
Large body of water partly enclosed by land
7
Large slow-moving mass of ice
8
Large area covered with trees
10
Seasonal heavy rainfall
Down
2
Tool for finding directions
3
Cold treeless Arctic plain
6
Narrow sea inlet between cliffs
9
Mountain that can erupt with lava
11
Region near the equator
12
Steep rock face at edge of land