Across
1
Mountain that can erupt with lava
4
Large area covered with trees
6
Vast body of salt water
7
Piece of land jutting into the sea
8
Large slow-moving mass of ice
11
Landform where river meets the sea
12
Chain or group of islands
13
Area where water covers the soil
Down
2
Large natural stream of water
3
Seasonal heavy rainfall
5
Distance east or west of prime meridian
7
Deep narrow valley with steep sides
9
Large body of water partly enclosed by land
10
Low area between mountains
12
Region surrounding the North Pole