Across
1
Ridge of rock or coral near the surface
2
Region between the two tropic lines
4
Wearing away of land by water or wind
8
Distance north or south of equator
9
Land surrounded by water on three sides
Down
2
Physical features of land
3
Where river meets the sea
5
Largest ocean on Earth
6
Mountain that can erupt with lava
7
Flat grassland in tropical regions
10
Cold treeless Arctic plain