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physical map 
Type of map representing the Earth’s surface (topography, watercourses, aquatic areas) using various techniques (contour lines, colors).
ocean
Vast body of saltwater covering a large part of the Earth’s surface and separating the continents.
mountain mass
Group of closely spaced mountains.
river
Natural watercourse of minor or intermediate size that empties into another watercourse.
plateau
Vast expanse of relatively flat land, higher than the surrounding region and bounded by deep valleys with sheer cliffs.
gulf
Long curvature in a coastline; it reaches far inland and is more or less open.
cape
Massive elevated headland extending into the sea or a river estuary.
plain
Vast, relatively flat expanse of land, lower than the surrounding landscape; its valleys are wide and shallow.
river
Major watercourse fed by numerous smaller rivers; it empties into the sea.
isthmus
Narrow strip of land between two bodies of water; it connects two larger expanses of land.
peninsula
Vast expanse of land extending into the sea and connected to a continent.
archipelago
Group of islands.
lake
Body of water completely surrounded by land; it varies in size and depth.
river estuary
Mouth of a river that is influenced by the tides; it forms an indentation in the coastline that varies in width and depth.
island
Expanse of land completely surrounded by water.
strait
Natural arm of a sea between two coasts; it connects two bodies of water.
sea
Vast body of saltwater at some distance inland; it is not as deep as an ocean.
bay
Indentation in a shoreline that reaches far inland and is delimited by two capes.
mountain range
A row of connected mountains characterized by high summits and deep valleys.
prairie
Vast expanse of relatively flat land that is characterized by grasses and is naturally devoid of trees.
