word | | Terrain |
| Aras | Armenia | Armenian Highland with mountains; little forest land; fast flowing rivers; good soil in Aras River valley |
| Araz | Azerbaijan | large, flat Kur-Araz Ovaligi (Kura-Araks Lowland) (much of it below sea level) with Great Caucasus Mountains to the north, Qarabag Yaylasi (Karabakh Upland) in west; Baku lies on Abseron Yasaqligi ... |
| archipelago | French Southern and Antarctic Lands | ... rocky with steep cliffs on the eastern side; has active thermal springs Iles Crozet: a large archipelago formed from the Crozet Plateau is divided into two groups of islands Iles Kerguelen: the ... |
| arctic | Norway | glaciated; mostly high plateaus and rugged mountains broken by fertile valleys; small, scattered plains; coastline deeply indented by fjords; arctic tundra in north |
| Ardennes | Belgium | flat coastal plains in northwest, central rolling hills, rugged mountains of Ardennes Forest in southeast |
| arid | Chad | broad, arid plains in center, desert in north, mountains in northwest, lowlands in south |
| Armenian | Armenia | Armenian Highland with mountains; little forest land; fast flowing rivers; good soil in Aras River valley |
| Ascension | Saint Helena | ... associated with the Atlantic Mid-Ocean Ridge Saint Helena: rugged, volcanic; small scattered plateaus and plains Ascension: surface covered by lava flows and cinder cones of 44 dormant volcanoes; ground rises to ... |
| Asia | Indian Ocean | ... Ocean; unique reversal of surface currents in the northern Indian Ocean; low atmospheric pressure over southwest Asia from hot, rising, summer air results in the southwest monsoon and southwest-to-northeast winds ... |
| Asia | Kazakhstan | extends from the Volga to the Altai Mountains and from the plains in western Siberia to oases and desert in Central Asia |
| associated | Kyrgyzstan | peaks of Tien Shan and associated valleys and basins encompass entire nation |
| associated | Saint Helena | the islands of this group result from volcanic activity associated with the Atlantic Mid-Ocean Ridge Saint Helena: rugged, volcanic; small scattered plateaus and plains Ascension: surface covered by lava flows and ... |
| Atlantic | Atlantic Ocean | ... from October to June; clockwise warm-water gyre (broad, circular system of currents) in the northern Atlantic, counterclockwise warm-water gyre in the southern Atlantic; the ocean floor is dominated by the ... |
| Atlantic | European Union | fairly flat along the Baltic and Atlantic coast; mountainous in the central and southern areas |
| Atlantic | Nicaragua | extensive Atlantic coastal plains rising to central interior mountains; narrow Pacific coastal plain interrupted by volcanoes |
| Atlantic | Saint Helena | the islands of this group result from volcanic activity associated with the Atlantic Mid-Ocean Ridge Saint Helena: rugged, volcanic; small scattered plateaus and plains Ascension: surface covered by lava flows and ... |
| atmospheric | Indian Ocean | ... in the southern Indian Ocean; unique reversal of surface currents in the northern Indian Ocean; low atmospheric pressure over southwest Asia from hot, rising, summer air results in the southwest monsoon and ... |
| atoll | Clipperton Island | coral atoll |
| atoll | French Southern and Antarctic Lands | ... and plains with a number of peninsulas stretching off its coasts Bassas da India (Iles Eparses): atoll, awash at high tide; shallow (15 m) lagoon Europa Island, Glorioso Islands, Juan de Nova ... |
| atoll | Wake Island | atoll of three low coral islands, Peale, Wake, and Wilkes, built up on an underwater volcano; central lagoon is former crater, islands are part of the rim |
| atolls | American Samoa | five volcanic islands with rugged peaks and limited coastal plains, two coral atolls (Rose Island, Swains Island) |
| atolls | Cocos (Keeling) Islands | flat, low-lying coral atolls |
| atolls | Cook Islands | low coral atolls in north; volcanic, hilly islands in south |
| atolls | Kiribati | mostly low-lying coral atolls surrounded by extensive reefs |
| atolls | Micronesia, Federated States of | islands vary geologically from high mountainous islands to low, coral atolls; volcanic outcroppings on Pohnpei, Kosrae, and Chuuk |