Across
1
Largest ocean on Earth
3
Cold treeless Arctic plain
7
Seasonal heavy rainfall
8
Narrow sea inlet between cliffs
10
Large slow-moving mass of ice
12
Low area between mountains
15
Largest hot desert in the world
Down
2
Deep narrow valley with steep sides
4
Tool for finding directions
5
Flat grassland in tropical regions
6
Physical features of land
9
Ridge of rock or coral near the surface
11
Height above sea level
13
Goods sold to another country
14
Mountain that can erupt with lava