Across
1
Largest river in South America
3
Raised area of land, smaller than a mountain
5
Region surrounding the North Pole
6
Ridge of rock or coral near the surface
7
Largest hot desert in the world
10
Narrow sea inlet between cliffs
Down
2
Largest ocean on Earth
4
Imaginary line around the middle of Earth
8
Tool for finding directions
9
Region near the equator