Across
1
Imaginary line around the middle of Earth
3
Flat grassland in tropical regions
5
Ridge of rock or coral near the surface
7
Largest ocean on Earth
9
Mountain that can erupt with lava
Down
2
Ocean between Americas and Europe/Africa
4
Large area covered with trees
6
Deep narrow valley with steep sides
8
Body of water surrounded by land
10
Chain or group of islands