Across
1
Large natural elevation of earth
5
Distance north or south of equator
6
Area where water covers the soil
7
Low-lying land surrounded by higher ground
8
Large natural stream of water
9
Distance east or west of prime meridian
11
Line dividing two countries
12
Where river meets the sea
Down
2
Vast body of salt water
3
Half of the Earth
4
Wearing away of land by water or wind
10
Large body of water partly enclosed by land