Across
1
Chain or group of islands
8
Distance east or west of prime meridian
9
Imaginary line around the middle of Earth
10
Land surrounded by water
13
Low area between mountains
Down
2
Ridge of rock or coral near the surface
3
Large slow-moving mass of ice
4
Half of the Earth
5
Piece of land jutting into the sea
6
Region near the equator
7
Total number of people in an area
11
Land surrounded by water on three sides
12
Height above sea level