Across
1
Distance east or west of prime meridian
4
Cold treeless Arctic plain
6
Visual representation of an area
7
Mountain that can erupt with lava
8
Half of the Earth
9
Large natural stream of water
10
Low-lying land surrounded by higher ground
11
Distance north or south of equator
12
Wearing away of land by water or wind
Down
2
Largest river in South America
3
Goods brought in from another country
4
Physical features of land
5
One of seven major landmasses