Across
1
Low area between mountains
3
Height above sea level
4
Distance east or west of prime meridian
5
Imaginary line around the middle of Earth
6
Large area covered with trees
8
Largest ocean on Earth
9
Deep narrow valley with steep sides
Down
2
Chain or group of islands
3
Ocean between Americas and Europe/Africa
7
Large body of water partly enclosed by land
10
Wearing away of land by water or wind
11
Large natural elevation of earth
12
Line dividing two countries