Across
1
Wearing away of land by water or wind
2
Ridge of rock or coral near the surface
3
Large body of water partly enclosed by land
5
Tool for finding directions
8
Vast body of salt water
10
Cold treeless Arctic plain
13
Visual representation of an area
Down
1
Where river meets the sea
4
Distance east or west of prime meridian
6
One of seven major landmasses
7
Region surrounding the North Pole
9
Piece of land jutting into the sea
11
Half of the Earth
12
Narrow sea inlet between cliffs