Across
1
Low-lying land surrounded by higher ground
4
Ridge of rock or coral near the surface
5
Dry land with little rainfall
6
Ocean between Americas and Europe/Africa
13
Chain or group of islands
14
Mountain that can erupt with lava
Down
2
Largest hot desert in the world
3
Cold treeless Arctic plain
7
Tool for finding directions
8
Half of the Earth
9
Piece of land jutting into the sea
10
Distance north or south of equator
11
Land surrounded by water on three sides
12
Imaginary line around the middle of Earth