Across
1
Ridge of rock or coral near the surface
3
Region surrounding the North Pole
5
Steep rock face at edge of land
6
Flat grassland in tropical regions
8
Region near the equator
8
Region between the two tropic lines
10
Dry land with little rainfall
Down
2
Largest hot desert in the world
4
Large slow-moving mass of ice
7
Flat elevated area of land
9
Where river meets the sea