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Continental Drift and Plate-Tectonics Theory
Source: U.S. Dept. of the Interior, Geological Survey According to the theory of continental drift, the world was made up of a single continent through most of geologic time. That continent…petrology
(Encyclopedia) petrology, branch of geology specifically concerned with the origin, composition, structure, and properties of rocks, primarily igneous and metamorphic, and secondarily sedimentary. It…Homework Helper Fun Facts: Geography
Geography Countries of the World U.S. States U.S. Cities World Geography The Continents World Land Areas and Elevations Continental Drift and Plate-Tectonics Theory Volcanoes of…Earth Science: Projects, definitions and topics
Cite Encyclopedia: Earth Sciences Science…Earthquakes Primer
About 8,000 mini-quakes a day, and on average, one exceptionally big one per year by Borgna Brunner Earthquakes in residential areas, such as this 1964 one in Seward, Alaska, can…Origin of Life: Early Earth Environment
Early Earth EnvironmentOrigin of LifeIntroductionSpontaneous GenerationEarly Earth Environment So if Pasteur is correct and life only comes from existing life, where and how did life begin? Many…World Geography
Find information about the continents, explorers, oceans, seas, rivers, mountains, elevation, geographic extremes, earthquakes, volcanoes, and more. Mount Everest Quiz New! Geography…The Great 1906 San Francisco Earthquake
Among the worst natural disasters in U.S. history by Chris Frantz San Francisco, California, April 1906 Related Links Almanac: San Francisco San Francisco Census Facts: 1906 Versus…The Mighty Tectonic Plates Quiz
This geography quiz has a range of topics related to tectonic plates, including different types of plate boundaries, the composition of the Earth, plate tectonic theory, and the impact of tectonic…World Land Areas and Elevations
The following table lists the approximate land area, highest elevation, and lowest elevation of the world's continents, including Africa, Antarctica, Asia, Australia, Europe, North America,…