Across
1
Flat grassland in tropical regions
2
Low area between mountains
3
Raised area of land, smaller than a mountain
6
Wearing away of land by water or wind
Down
2
Mountain that can erupt with lava
4
Body of water surrounded by land
5
Flat elevated area of land
7
Vast body of salt water
8
Region surrounding the North Pole
9
One of seven major landmasses