Across
1
Where river meets the sea
4
Largest river in South America
5
Landform where river meets the sea
9
Half of the Earth
10
Region surrounding the North Pole
11
Land surrounded by water on three sides
13
Flat grassland in tropical regions
Down
2
Physical features of land
3
Large body of water partly enclosed by land
6
Body of water surrounded by land
7
Distance east or west of prime meridian
8
Wearing away of land by water or wind
12
Chain or group of islands
14
City that is seat of government
15
Piece of land jutting into the sea