Across
1
Half of the Earth
7
Where river meets the sea
8
Line dividing two countries
9
Tool for finding directions
10
Wearing away of land by water or wind
12
Cold treeless Arctic plain
13
Goods brought in from another country
Down
1
Raised area of land, smaller than a mountain
2
Distance north or south of equator
3
Low area between mountains
4
Land surrounded by water
5
Largest ocean on Earth
6
One of seven major landmasses
11
Piece of land jutting into the sea