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Snow, John T. – Scientific American, 1984
Although tornadoes have been one of the most elusive phenomena in meteorology, new observation techniques are now revealing how they are spawned by thunderstorms. Tornado structure and formation, thunderstorms, tornadic thunderstorms, and the evolution and structure of such thunderstorms are considered. Why the Midwest has frequent tornadoes is…
Descriptors: Meteorology, Natural Disasters, Scientific Research, Weather
Williams, Earle R. – Scientific American, 1988
Discusses the natural phenomena of lightning. States that the exact microphysical processes responsible for the charging of storm clouds remain in dispute although for centuries it has been known that lightning is a form of electricity. Uses diagrams to explain the structures of thunderclouds and charge transfer. (RT)
Descriptors: Electricity, Environmental Influences, Meteorology, Physical Environment
Walker, Jearl – Scientific American, 1978
The author discusses how plumes of smoke in the air can give us an indication of how atmospheric temperature varies with height. (MN)
Descriptors: Instructional Materials, Meteorology, Resource Materials, Science Activities
Walker, Jearl – Scientific American, 1988
Discusses some of the physical processes involved in the freezing of water. Traces the work of a variety of researchers who have discovered numerous variables involved in the complexities of ice. (TW)
Descriptors: Crystallography, Meteorology, Physical Environment, Physics
Gingerich, Owen – Scientific American, 1992
Presents an historical perspective of astronomy. Discusses how Columbus' discovery of America demonstrated the incompleteness of the ancient knowledge of the world and paved the way for unorthodox astronomical ideas, including the sun-centered cosmology of Copernicus. (MCO)
Descriptors: Art, Astronomy, History, Medieval History
Ingersoll, Andrew P. – Scientific American, 1983
The composition and dynamics of the earth's atmosphere are discussed, considering the atmosphere's role in distributing the energy of solar radiation received by the earth. Models of this activity which help to explain climates of the past and predict those of the future are also considered. (JN)
Descriptors: College Science, Earth Science, Geology, Higher Education
Jones, Philip D.; Wigley, Tom M. L. – Scientific American, 1990
Results from the analysis of land and marine records from the past century are presented. It is indicated that the planet earth has warmed about one-half of a degree celsius. The uncertainty of these measurements and future warming trends are discussed. (CW)
Descriptors: Climate, College Science, Conservation (Environment), Earth Science
Schneider, Stephen H. – Scientific American, 1989
Discusses the global change of climate. Presents the trend of climate change with graphs. Describes mathematical climate models including expressions for the interacting components of the ocean-atmosphere system and equations representing the basic physical laws governing their behavior. Provides three possible responses on the change. (YP)
Descriptors: Climate, Climate Control, Environmental Influences, Higher Education
Stolarski, Richard S. – Scientific American, 1988
Discusses the Airborne Antarctic Ozone Experiment (1987) and the findings of the British Antarctic Survey (1985). Proposes two theories for the appearance of the hole in the ozone layer over Antarctica which appears each spring; air pollution and natural atmospheric shifts. Illustrates the mechanics of both. Supports worldwide chlorofluorocarbon…
Descriptors: Air Pollution, Chemistry, Climate, Earth Science