Across
1
Ridge of rock or coral near the surface
4
Line dividing two countries
5
Chain or group of islands
6
Distance north or south of equator
7
Height above sea level
Down
2
Dry land with little rainfall
3
Largest ocean on Earth
8
Imaginary line around the middle of Earth
9
City that is seat of government
10
Flat elevated area of land
11
Vast body of salt water
12
Cold treeless Arctic plain