Across
1
Land surrounded by water on three sides
6
Imaginary line around the middle of Earth
8
Cold treeless Arctic plain
9
Line dividing two countries
Down
2
Region between the two tropic lines
3
One of seven major landmasses
4
Tool for finding directions
5
Largest river in South America
7
City that is seat of government
10
Dry land with little rainfall
11
Half of the Earth
12
Land surrounded by water