Across
1
Low-lying land surrounded by higher ground
4
Ocean between Americas and Europe/Africa
5
Dry land with little rainfall
8
Chain or group of islands
9
Half of the Earth
10
Large slow-moving mass of ice
12
Tool for finding directions
Down
2
Distance east or west of prime meridian
3
Low area between mountains
6
Line dividing two countries
7
Largest hot desert in the world
11
Cold treeless Arctic plain