Across
1
Distance east or west of prime meridian
5
Deep narrow valley with steep sides
8
Dry land with little rainfall
10
Mountain that can erupt with lava
11
Largest river in South America
Down
2
Flat grassland in tropical regions
3
Area where water covers the soil
4
City that is seat of government
6
Distance north or south of equator
7
Land surrounded by water
8
Landform where river meets the sea
9
Ridge of rock or coral near the surface