Across
1
Seasonal heavy rainfall
4
Height above sea level
9
Where river meets the sea
10
Low area between mountains
Down
2
Half of the Earth
3
Ocean between Americas and Europe/Africa
5
Low-lying land surrounded by higher ground
6
Deep narrow valley with steep sides
7
Large body of water partly enclosed by land
8
Land surrounded by water
11
Distance east or west of prime meridian