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?
- crater lake
- oxbow lake
- shield volcano
- volcanic crater
- National Geographic Education: What is an atoll?
- National Geographic Education: What is a bay?
- National Geographic Education: What is a canyon?
- National Geographic Education: What is a dune?
- National Geographic Education: What is a fjord?
- National Geographic Education: What is a glacier?
- National Geographic Education: What is a lagoon?
- National Geographic Education: What is an oxbow lake?
- National Geographic Education: What is a river?
- National Geographic Education: What is a volcano?
- National Geographic Education: What is a 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.
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.
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.
steep volcano made of hardened lava, rock, and ash. Also known as a composite volcano.