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(Encyclopedia) Interior, United States Department of the, federal executive department established in 1849, delegated custodian of U.S. natural resources, and whose head, the Secretary of the Interior, has cabinet r...
(Encyclopedia) Northwest Passage, water routes through the Arctic Archipelago, N Canada, and along the northern coast of Alaska between the Pacific and Atlantic oceans. Even though the explorers of the 16th cent. de...
(Encyclopedia) cuesta kwĕsˈtə [key], asymmetric ridge characterized by a short, steep escarpment on one side, and a long, gentle slope on the other. The steep side exposes the edge of erosion-resistant rock layer...
(Encyclopedia) fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...
(Encyclopedia) Rasmussen, Knud Johan Victor kəno͞otˈ yōˈhän vĭkˈtôr räsˈmo͝osən [key], 1879–1933, Danish arctic explorer and ethnologist. Born in Greenland of Eskimo ancestry on his mother's side, he ...
(Encyclopedia) opossum əpŏsˈəm, pŏsˈ– [key], name for several marsupials, or pouched mammals, of the family Didelphidae, native to Central and South America, with one species extending N to the United States...
(Encyclopedia) sunspots, dark, usually irregularly shaped spots on the sun's surface that are actually solar magnetic storms. The spots are darker because the temperature of the spots is lower than that of the surro...
(Encyclopedia) Ceres sîrˈēz [key], in astronomy, a dwarf planet, the first asteroid to be discovered. It was found on Jan. 1, 1801, by G. Piazzi. He took three distinct observations; on the basis of these the mat...
(Encyclopedia) water skiing, sport of riding on skis along the water's surface while being towed by a motorboat. It probably originated on the French Riviera in the early 1920s, and was known in the United States by...
(Encyclopedia) racquets, game played by two or four persons on a court 60 by 30 ft (18.3 m by 9.1 m); it is surrounded by three walls 30 ft (9.1 m) high and a backwall 15 ft (4.6 m) high. The ball, 1 in. (2.54 cm) i...