Across
1
Steep rock face at edge of land
4
Imaginary line around the middle of Earth
5
Raised area of land, smaller than a mountain
6
Low area between mountains
9
Goods sold to another country
Down
2
Ridge of rock or coral near the surface
3
Large slow-moving mass of ice
7
Chain or group of islands
8
Largest river in South America
10
Deep narrow valley with steep sides