Across
1
Region surrounding the North Pole
3
Cold treeless Arctic plain
4
Flat elevated area of land
6
Large slow-moving mass of ice
9
Raised area of land, smaller than a mountain
10
Wearing away of land by water or wind
Down
2
Body of water surrounded by land
3
Region near the equator
5
Mountain that can erupt with lava
7
Goods sold to another country
8
Deep narrow valley with steep sides
11
Imaginary line around the middle of Earth
12
Long-term weather patterns of an area
13
Ocean between Americas and Europe/Africa