Across
1
Line dividing two countries
3
Flat elevated area of land
6
Distance east or west of prime meridian
8
Wearing away of land by water or wind
12
Flat grassland in tropical regions
13
Region surrounding the North Pole
Down
2
Height above sea level
4
Imaginary line around the middle of Earth
5
Seasonal heavy rainfall
7
Tool for finding directions
9
Low area between mountains
10
Region between the two tropic lines
11
Large body of water partly enclosed by land