Across
1
City that is seat of government
5
Distance east or west of prime meridian
6
Region surrounding the North Pole
7
Low area between mountains
9
Low-lying land surrounded by higher ground
11
Half of the Earth
12
Ocean between Americas and Europe/Africa
Down
1
Deep narrow valley with steep sides
2
Land surrounded by water on three sides
3
Cold treeless Arctic plain
4
Distance north or south of equator
8
Raised area of land, smaller than a mountain
10
Large body of water partly enclosed by land