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polar front
(Encyclopedia)polar front, zone of transition between polar and tropical air masses. Its average position during the winter is at about 30° lat. and during the summer at about 60° lat. In the N Atlantic Ocean, fo...Niue
(Encyclopedia)Niue nēo͞oˈā [key], coral island (2015 est. pop. 2,000), c.100 sq mi (260 sq km), South Pacific, freely associated with New Zealand. Alofi is the capital. The inhabitants are mainly Protestant Pol...tornado
(Encyclopedia)tornado, dark, funnel-shaped cloud containing violently rotating air that develops below a heavy cumulonimbus cloud mass and extends toward the earth. The funnel twists about, rises and falls, and whe...Duvalier, François
(Encyclopedia)Duvalier, François fräNswäˈ düvälyāˈ [key], 1907–71, dictator of Haiti (1957–71). A physician, he became director-general of the national public health service in 1946 and subsequently ser...Sundarbans
(Encyclopedia)Sundarbans, large, heavily forested swamp region, c.3,860 sq mi (10,000 sq km), in the S Ganges delta on the Bay of Bengal, about 60% in SW Bangladesh and the rest in West Bengal state, India. The mor...wind
(Encyclopedia)wind, flow of air relative to the earth's surface. A wind is named according to the point of the compass from which it blows, e.g., a wind blowing from the north is a north wind. The diurnal, or dai...Odisha
(Encyclopedia)Odisha ərĭsˈə, ō– [key], state (2001 provisional pop. 36,706,920), 60,162 sq mi (155,820 sq km), E India, on the Bay of Bengal. Bhubaneswar is the capital. The relatively unindented coastline (...Tonga
(Encyclopedia)Tonga tŏngˈgə [key], officially Kingdom of Tonga, island kingdom (2015 est. pop. 106,000), 270 sq mi (699 sq km), South Pacific, c.2000 mi (3,220 km) NE of Sydney, Australia. Tonga is the only surv...Vanuatu
(Encyclopedia)Vanuatu vänˌwäto͞oˈ [key], officially Republic of Vanuatu, independent republic (2015 est. pop. 265,000), c.5,700 sq mi (14,760 sq km), South Pacific, E of Australia. Vanuatu is a 450-mi (724-km)...Tuvalu
(Encyclopedia)Tuvalu to͞ovälˈo͞o [key], independent Commonwealth nation (2015 est. pop. 11,000), 10 sq mi (26 sq km), composed of nine low coral atolls, formerly known as the Ellice (or Lagoon) Islands, scatter...Browse by Subject
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