Across
1
Largest hot desert in the world
4
Low-lying land surrounded by higher ground
5
Raised area of land, smaller than a mountain
7
Large natural stream of water
8
Deep narrow valley with steep sides
9
Distance east or west of prime meridian
Down
2
Region near the equator
3
Large natural elevation of earth
6
Where river meets the sea
10
Body of water surrounded by land
11
Ocean between Americas and Europe/Africa