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mountain climbing

(Encyclopedia)mountain climbing, the practice of climbing to elevated points for sport, pleasure, or research. Also called mountaineering, it is practiced throughout the world. Many mountain climbing clubs have...

Arctic, the

(Encyclopedia)CE5 Arctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30′N) but are usually defi...

Graham Land

(Encyclopedia)Graham Land, part of the Antarctic Peninsula, W Antarctica. This ice-covered, mountainous area was thought to be a group of islands but further exploration (1934) showed it to be peninsular. Claimed b...

Little America

(Encyclopedia)Little America, base for Antarctic exploring expeditions, Antarctica, on the Ross Ice Shelf, S of the Bay of Whales. Richard E. Byrd, a U.S. explorer, established and named Little America in 1929 and ...

kettle

(Encyclopedia)kettle, oval depression found in glacial moraines, which are landforms made up of rock debris. When a glacier melts and draws away from an area, a block of ice may break off and be covered by earth an...

Kluane National Park

(Encyclopedia)Kluane National Park klo͞oānˈ [key], c.8,500 sq mi (22,000 sq km), SW Yukon, Canada, between Kluane Lake and the British Columbia and Alaska borders; est. 1972. Located in the St. Elias Mts., the p...

Kara Sea

(Encyclopedia)Kara Sea kärˈə [key], Rus. Karskoye More, shallow section of the Arctic Ocean, off N Russia, between Severnaya Zemlya and Novaya Zemlya. It has an average depth of 420 ft (128 m). It receives the O...

Enceladus

(Encyclopedia)Enceladus ĕnsĕlˈədəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn II (or S2), Enceladus is 310 mi (500 km) in diameter, orbits Saturn at a m...

food additives

(Encyclopedia)food additives, substances added to foods by manufacturers to prevent spoilage or to enhance appearance, taste, texture, or nutritive value. By quantity, the most common food additives are flavorings,...

melting point

(Encyclopedia)melting point, temperature at which a substance changes its state from solid to liquid. Under standard atmospheric pressure different pure crystalline solids will each melt at a different specific tem...