Across
1
Cold treeless Arctic plain
5
Imaginary line around the middle of Earth
6
Region near the equator
8
Raised area of land, smaller than a mountain
Down
2
Flat elevated area of land
3
Deep narrow valley with steep sides
4
Mountain that can erupt with lava
7
Land surrounded by water
9
Ocean between Americas and Europe/Africa
10
Vast body of salt water