Across
1
Deep narrow valley with steep sides
5
Largest hot desert in the world
6
Large slow-moving mass of ice
7
Flat elevated area of land
8
Line dividing two countries
10
One of seven major landmasses
Down
2
Largest ocean on Earth
3
Region near the equator
4
Wearing away of land by water or wind
9
Seasonal heavy rainfall
11
Long-term weather patterns of an area
12
Dry land with little rainfall