sea
a body of salt water that is partly enclosed by land.
butte
an isolated hill with sloping sides and a small, flat top.
sound
a long wide ocean inlet
continent
one of the seven great land masses of the Earth.
harbor
a sheltered part of a body of water.
iceberg
a huge block of floating ice that has broken off of a glacier.
canyon
a deep valley with steep sides
lake
an inland body of fresh or salt water
mesa
a raised area with steep sides and a large flat top.
channel
a body of water that connects two larger bodies of water.
river
a long body of water that flows over land.
mountain
a high area of land with steep sides and a sharp peak.
bay
a body of water that extends into the land
isthmus
a narrow strip of land that connects two larger land areas.
tributary
a river or stream that flows into a larger body of water
fjord
a long narrow inlet of the sea between cliffs or slopes.
cliff
a steep face of rock or Earth
waterfall
a stream of water that falls from a high place
oasis
a fertile spot in a desert
geyser
a spring that spouts hot water and steam from time to time
valley
an area of land between mountains or hills
tundra
a cold, dry, treeless region where mosses, grasses, and lichens grow
field
a broad, level, open area of land
forest
a large area of land covered with trees and other plants
archipelago
a large group of islands
prairie
a region of flat or hilly land covered by tall grasses