Across
1
Region near the equator
1
Region between the two tropic lines
4
Seasonal heavy rainfall
5
Imaginary line around the middle of Earth
6
City that is seat of government
10
Body of water surrounded by land
11
Chain or group of islands
Down
2
Largest river in South America
3
Flat elevated area of land
7
Large slow-moving mass of ice
8
Line dividing two countries
9
Vast body of salt water
12
Deep narrow valley with steep sides