Across
1
Flat grassland in tropical regions
4
Distance north or south of equator
5
Piece of land jutting into the sea
6
Wearing away of land by water or wind
7
Deep narrow valley with steep sides
8
Land surrounded by water on three sides
10
Region near the equator
Down
2
Chain or group of islands
3
Largest ocean on Earth
4
Distance east or west of prime meridian
9
Large natural elevation of earth