Across
1
Ridge of rock or coral near the surface
3
Large natural elevation of earth
4
Land surrounded by water on three sides
6
Where river meets the sea
7
Distance east or west of prime meridian
9
Deep narrow valley with steep sides
11
Largest ocean on Earth
Down
2
Region between the two tropic lines
5
Physical features of land
7
Distance north or south of equator
8
Large slow-moving mass of ice
10
Vast body of salt water