Across
1
Steep rock face at edge of land
3
Large natural elevation of earth
5
Cold treeless Arctic plain
7
Half of the Earth
9
Large slow-moving mass of ice
12
Large body of water partly enclosed by land
Down
2
Wearing away of land by water or wind
4
Region near the equator
6
Goods sold to another country
8
Low area between mountains
10
Imaginary line around the middle of Earth
11
Tool for finding directions