Across
1
Largest ocean on Earth
3
Ridge of rock or coral near the surface
5
Physical features of land
8
Deep narrow valley with steep sides
9
One of seven major landmasses
Down
2
Wearing away of land by water or wind
4
Largest river in South America
6
Goods brought in from another country
7
Region surrounding the North Pole
10
Mountain that can erupt with lava
11
Large natural stream of water
12
Large body of water partly enclosed by land
13
Imaginary line around the middle of Earth