Across
1
Deep narrow valley with steep sides
2
Largest ocean on Earth
7
Landform where river meets the sea
8
Large slow-moving mass of ice
9
Distance east or west of prime meridian
10
Body of water surrounded by land
11
Cold treeless Arctic plain
Down
1
Tool for finding directions
3
Largest hot desert in the world
4
Long-term weather patterns of an area
5
Imaginary line around the middle of Earth
6
Vast body of salt water
12
Line dividing two countries
13
Height above sea level