Across
1
Half of the Earth
5
Deep narrow valley with steep sides
7
Cold treeless Arctic plain
9
Steep rock face at edge of land
10
Height above sea level
11
Line dividing two countries
Down
2
Vast body of salt water
3
Low area between mountains
4
Piece of land jutting into the sea
6
Region near the equator
6
Region between the two tropic lines
8
Goods sold to another country
9
One of seven major landmasses
12
Body of water surrounded by land