Across
1
City that is seat of government
4
Largest river in South America
5
Low area between mountains
6
Large slow-moving mass of ice
8
Area where water covers the soil
9
Ridge of rock or coral near the surface
10
One of seven major landmasses
11
Distance north or south of equator
12
Low-lying land surrounded by higher ground
Down
2
Half of the Earth
3
Largest hot desert in the world
5
Mountain that can erupt with lava
7
Large natural elevation of earth
13
Height above sea level