横向
1
Half of the Earth
4
Mountain that can erupt with lava
5
Area where water covers the soil
6
Largest river in South America
11
Where river meets the sea
12
Distance north or south of equator
13
Largest ocean on Earth
纵向
2
Flat grassland in tropical regions
3
Visual representation of an area
7
Seasonal heavy rainfall
8
Height above sea level
9
Physical features of land
10
Large natural stream of water