Across
1
Tool for finding directions
5
Cold treeless Arctic plain
6
Flat elevated area of land
8
Where river meets the sea
10
Ridge of rock or coral near the surface
11
Largest river in South America
12
Large natural stream of water
13
Goods brought in from another country
Down
2
Largest ocean on Earth
3
Height above sea level
4
Low-lying land surrounded by higher ground
7
Distance east or west of prime meridian
9
Distance north or south of equator