Across
1
Large natural elevation of earth
5
Deep narrow valley with steep sides
6
Imaginary line around the middle of Earth
7
Ridge of rock or coral near the surface
9
Height above sea level
11
Land surrounded by water on three sides
Down
2
Low-lying land surrounded by higher ground
3
Tool for finding directions
4
One of seven major landmasses
8
Large natural stream of water
9
Largest river in South America
10
Cold treeless Arctic plain