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Shield Volcanoes
Shield volcanoes are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping…Okmok
(Encyclopedia) Okmok, shield volcano on Umnak, SW Alaska, in the Aleutian Islands. Rising to 3,520 ft (1,073 m) and extending over most of NE Umnak, the 22-mi-wide (35-km) volcano contains two 6-mi-…Umnak
(Encyclopedia) UmnakUmnak&oomacr;mˈnăk [key], island, c.83 mi (134 km) long, off SW Alaska, one of the largest of the Aleutian Islands. Its two lobes, connected by an isthmus, are marked by…Nyamuragira
(Encyclopedia) Nyamuragira or Nyamulagira, active volcano (11,033 ft/3,058 m), S Virunga range, in E Congo (Kinshasa) near the Rwanda border, N of Lake Kivu and 15 mi (25 km) N of Goma, in S Virunga…Principal Types of Volcanoes
Source: U.S. Dept. of the Interior, Geological Survey Cinder Cones Composite Volcanoes Shield Volcanoes Lava Domes Submarine Volcanoes Geologists generally group…Volcanic Seven Summits
Top of Page Source: iStockFrom Mount Everest as the highest mountain above sea level to Mauna Kea, the tallest mountain on Earth, there are peaks and summits all around us. Mountains used to be seen…Pacific Ocean: Ocean Facts & Animals
Top of Page The Pacific Ocean is a vast and majestic body of water, stretching across more than one-third of the planet's surface. Its crystal-clear blue waters and warm, tropical climate make it a…Trending
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