Across
1
Half of the Earth
5
City that is seat of government
6
Region between the two tropic lines
7
Where river meets the sea
9
Flat grassland in tropical regions
12
Large slow-moving mass of ice
13
Distance east or west of prime meridian
Down
2
Ocean between Americas and Europe/Africa
3
Vast body of salt water
4
Raised area of land, smaller than a mountain
6
Cold treeless Arctic plain
7
Imaginary line around the middle of Earth
8
Visual representation of an area
10
Largest river in South America
11
Low-lying land surrounded by higher ground