The large bodies of salt water on the earth
An ocean
A mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases, steam, and dust are or have been forced
Volcano
An area, often covered with sand or rocks, where there is very little rain and not many plants
Desert
The shape of a bone, a shell, or a plant or animal that has been preserved in rock for a very long period
Fossil
A row of mountains
a mountain range
An area of a country that is protected by the government because of its natural beauty or because it has a special history
a National Park
A large area of ocean mostly surrounded by land
Gulf
A hill of sand near a beach or in a desert.
Dune
The salty water that covers a large part of the surface of the earth, or a large area of salty water, smaller than an ocean, that is partly or completely surrounded by land
A sea
An area of coast that forms a deep curve.
A bay
A sudden violent movement of the earth's surface, sometimes causing great damage
Eartquake
An area of water surrounded on all sides by land.
Lake