Volcano

a vent in the Earth's crust through which lava, steam, and ash are released

Plateau

a large, flat area of land that is higher than the surrounding land

River

a large, flowing body of water that usuallly empties into a sea or ocean

Valley

a low place between mountains

Ocean

a large body of saltwater that surrounds a continent

Peninsula

a body of land that is surrounded by water on 3 sides

Plain

flat lands that only have small changes in elevations

Isthmus

a narrow strip of land connecting 2 large pieces of land

Lake

a large body of water surrounded by land on all sides

Mountain

a natural elevation of the Earth's surface, rising to an altitude usually greater than 2,000 ft.

Gulf

a part of the ocean or sea that is almost enclosed by land, larger than a bay

Harbor

a part of a body of water along the shore deep enough for anchoring a ship

Island

a piece of land that is surrounded by water

Continent

one of the seven main landmasses of the Earth

Delta

a low, watery land formed at the mouth of a river

Dune

a hill or ridge made of sand; usually formed by the wind

Bay

a body of water that is partly enclosed by land, smaller than a gulf

Cape

a piece of land jutting into the sea or some other large body of water

Coast

the land next to the sea; seashore

Fjord

a deep narrow inlet of the sea

Strait

a passage of water connecting 2 large bodies of water

Canal

a large waterway

Plateau

a high flat landform that rises steeply above the surrounding land

Geyser

a hot spring that shoots out periodic bursts of water and steam

Archipelago

a large body of water with many islands

Beach

an expanse of sand and pebbles

Canyon

a deep valley with steep sides

Dam

something that stops water from flowing

Desert

an area where there is little or no precipitation