Across
1
Landform where river meets the sea
2
Long-term weather patterns of an area
4
Imaginary line around the middle of Earth
5
Largest ocean on Earth
7
Cold treeless Arctic plain
8
Large slow-moving mass of ice
10
Distance east or west of prime meridian
Down
2
Deep narrow valley with steep sides
3
Low area between mountains
4
Where river meets the sea
6
Large natural elevation of earth
9
Steep rock face at edge of land