Across
1
Distance east or west of prime meridian
5
Where river meets the sea
6
Deep narrow valley with steep sides
7
Narrow sea inlet between cliffs
8
Wearing away of land by water or wind
9
Ocean between Americas and Europe/Africa
10
Half of the Earth
Down
2
Imaginary line around the middle of Earth
3
Cold treeless Arctic plain
4
One of seven major landmasses
11
Area where water covers the soil