Across
1
Cold treeless Arctic plain
4
Long-term weather patterns of an area
5
Raised area of land, smaller than a mountain
6
Mountain that can erupt with lava
9
Flat elevated area of land
10
Distance north or south of equator
11
Vast body of salt water
13
Imaginary line around the middle of Earth
Down
2
Large natural stream of water
3
Goods brought in from another country
4
Deep narrow valley with steep sides
7
Height above sea level
8
Body of water surrounded by land
12
Largest hot desert in the world