Across
1
Landform where river meets the sea
3
Half of the Earth
5
Height above sea level
7
Total number of people in an area
9
Mountain that can erupt with lava
Down
1
Dry land with little rainfall
2
Low area between mountains
4
Land surrounded by water on three sides
5
Chain or group of islands
6
Region surrounding the North Pole
8
Largest ocean on Earth