Across
1
Land surrounded by water on three sides
5
Land surrounded by water
6
Low area between mountains
7
Line dividing two countries
11
Largest river in South America
Down
2
Long-term weather patterns of an area
3
Flat grassland in tropical regions
4
Tool for finding directions
6
Mountain that can erupt with lava
8
Chain or group of islands
9
Distance east or west of prime meridian
10
Cold treeless Arctic plain