Across
1
Region surrounding the North Pole
3
Line dividing two countries
5
Dry land with little rainfall
6
Piece of land jutting into the sea
8
Large natural stream of water
10
Mountain that can erupt with lava
Down
2
Ridge of rock or coral near the surface
3
Low-lying land surrounded by higher ground
4
Large slow-moving mass of ice
7
Region near the equator
9
Chain or group of islands
11
Land surrounded by water