Across
1
Region between the two tropic lines
4
Imaginary line around the middle of Earth
6
Distance north or south of equator
7
Tool for finding directions
8
Land surrounded by water
10
Mountain that can erupt with lava
12
Large natural stream of water
14
Chain or group of islands
Down
2
Large area covered with trees
3
Largest ocean on Earth
5
Wearing away of land by water or wind
9
Deep narrow valley with steep sides
11
Visual representation of an area
13
Land surrounded by water on three sides
15
Large slow-moving mass of ice