Across
1
Flat elevated area of land
5
Land surrounded by water on three sides
6
Height above sea level
7
Raised area of land, smaller than a mountain
8
Flat grassland in tropical regions
13
Deep narrow valley with steep sides
Down
2
Imaginary line around the middle of Earth
3
City that is seat of government
4
Cold treeless Arctic plain
9
Low area between mountains
10
Distance east or west of prime meridian
11
Largest river in South America
12
Chain or group of islands