Across
1
Distance east or west of prime meridian
4
Region surrounding the North Pole
5
Deep narrow valley with steep sides
7
Largest river in South America
8
Chain or group of islands
11
Large natural elevation of earth
Down
2
One of seven major landmasses
3
Physical features of land
6
Vast body of salt water
9
Cold treeless Arctic plain
10
Raised area of land, smaller than a mountain