Across
1
Half of the Earth
4
Mountain that can erupt with lava
6
Steep rock face at edge of land
7
Large body of water partly enclosed by land
8
Low-lying land surrounded by higher ground
9
Distance east or west of prime meridian
10
Largest river in South America
12
Seasonal heavy rainfall
Down
1
Raised area of land, smaller than a mountain
2
Ridge of rock or coral near the surface
3
Large natural elevation of earth
5
Piece of land jutting into the sea
6
One of seven major landmasses
11
Tool for finding directions