Across
1
Height above sea level
5
Deep narrow valley with steep sides
6
Region near the equator
7
Largest river in South America
9
One of seven major landmasses
11
Largest ocean on Earth
13
Visual representation of an area
14
Distance east or west of prime meridian
15
Land surrounded by water on three sides
Down
2
Total number of people in an area
3
Large slow-moving mass of ice
4
Half of the Earth
8
Large natural elevation of earth
10
Cold treeless Arctic plain
12
Low-lying land surrounded by higher ground