Across
1
Vast body of salt water
5
Body of water surrounded by land
6
Land surrounded by water
7
Imaginary line around the middle of Earth
11
Region surrounding the North Pole
12
Flat elevated area of land
13
Cold treeless Arctic plain
Down
2
Deep narrow valley with steep sides
3
Landform where river meets the sea
4
Largest river in South America
8
Distance north or south of equator
9
One of seven major landmasses
10
Dry land with little rainfall