Across
1
Flat elevated area of land
4
Vast body of salt water
6
Wearing away of land by water or wind
7
Low area between mountains
8
Where river meets the sea
10
Region between the two tropic lines
11
Physical features of land
12
Largest river in South America
14
One of seven major landmasses
Down
2
Low-lying land surrounded by higher ground
3
Ocean between Americas and Europe/Africa
5
Distance east or west of prime meridian
9
Large natural elevation of earth
13
Deep narrow valley with steep sides