Across
1
Ridge of rock or coral near the surface
3
Deep narrow valley with steep sides
5
Area where water covers the soil
6
Dry land with little rainfall
9
Steep rock face at edge of land
10
Mountain that can erupt with lava
Down
2
Narrow sea inlet between cliffs
3
Piece of land jutting into the sea
4
Region near the equator
7
One of seven major landmasses
8
Distance east or west of prime meridian