Across
1
Ocean between Americas and Europe/Africa
6
Raised area of land, smaller than a mountain
7
Height above sea level
8
Cold treeless Arctic plain
10
Flat grassland in tropical regions
11
Tool for finding directions
Down
2
Wearing away of land by water or wind
3
Largest hot desert in the world
4
Mountain that can erupt with lava
5
Region between the two tropic lines
9
Region surrounding the North Pole