Across
1
Line dividing two countries
3
Mountain that can erupt with lava
5
Height above sea level
7
Land surrounded by water on three sides
10
Chain or group of islands
Down
2
Imaginary line around the middle of Earth
4
Goods brought in from another country
6
Dry land with little rainfall
8
Large slow-moving mass of ice
9
Low-lying land surrounded by higher ground