Across
1
Tool for finding directions
4
Mountain that can erupt with lava
5
Long-term weather patterns of an area
6
Distance east or west of prime meridian
8
Largest ocean on Earth
10
Ridge of rock or coral near the surface
Down
2
Largest river in South America
3
Region surrounding the North Pole
7
Low area between mountains
9
Low-lying land surrounded by higher ground