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  • The images in this gallery were collected from two satellites orbiting the Earth: the IKONOS and GeoEye-1 satellites operated and maintained by GeoEye.

    Satellite imagery captures a dazzling array of features in the natural landscape. How many can you identify? Where else would you expect to find them?

      • atoll
      • bay
      • canyon
      • crater lake
      • erg
      • fjord
      • glacier
      • lagoon
      • moraine
      • oxbow lake
      • river
      • shield volcano
      • stratovolcano
      • volcanic crater
  • Term Part of Speech Definition Encyclopedic Entry
    atoll Noun

    a coral reef or string of coral islands that surrounds a lagoon.

    Encyclopedic Entry: atoll
    atoll lagoon Noun

    shallow, circular body of water between the ocean and a ring-shaped atoll.

    bay Noun

    body of water partially surrounded by land, usually with a wide mouth to a larger body of water.

    Encyclopedic Entry: bay
    canyon Noun

    deep, narrow valley with steep sides.

    Encyclopedic Entry: canyon
    crater Noun

    bowl-shaped depression formed by a volcanic eruption or impact of a meteorite.

    Encyclopedic Entry: crater
    fjord Noun

    long, narrow ocean inlet between steep slopes.

    Encyclopedic Entry: fjord
    fjord estuary Noun

    place where a river or freshwater stream flows into a deep, steep gorge carved by a glacier and filled with seawater.

    glacial lake Noun

    body of water created by a melting glacier.

    glacier Noun

    mass of ice that moves slowly over land.

    Encyclopedic Entry: glacier
    lagoon Noun

    shallow body of water that may have an opening to a larger body of water, but is also protected from it by a sandbar or coral reef.

    Encyclopedic Entry: lagoon
    lake Noun

    body of water surrounded by land.

    Encyclopedic Entry: lake
    moraine Noun

    material, such as earth, sand, and gravel, transported by a glacier.

    Encyclopedic Entry: moraine
    oxbow lake Noun

    lake formed from an abandoned bend in a river.

    Encyclopedic Entry: oxbow lake
    river Noun

    large stream of flowing fresh water.

    Encyclopedic Entry: river
    sand dune Noun

    mound of sand created by the wind.

    shield volcano Noun

    large, gently sloping volcano made from fluid lava.

    stratovolcano Noun

    steep volcano made of hardened lava, rock, and ash. Also known as a composite volcano.