Across
1
Imaginary line around the middle of Earth
3
Largest ocean on Earth
5
Body of water surrounded by land
6
Distance east or west of prime meridian
8
Flat grassland in tropical regions
9
Cold treeless Arctic plain
10
Tool for finding directions
11
Seasonal heavy rainfall
Down
2
Largest hot desert in the world
4
Land surrounded by water on three sides
7
Region surrounding the North Pole