Across
1
Landform where river meets the sea
3
Seasonal heavy rainfall
4
Where river meets the sea
5
Height above sea level
7
Wearing away of land by water or wind
9
Region surrounding the North Pole
Down
2
Land surrounded by water on three sides
6
Cold treeless Arctic plain
8
Large natural stream of water
10
Half of the Earth
11
Tool for finding directions
12
Body of water surrounded by land
13
Mountain that can erupt with lava