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plate tectonics
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Earth's tectonic plates
What is the theory of continental drift?
Earth's lithosphere and upper mantle crustal generation and destruction
Discern between body and surface waves, primary and secondary waves, and Love and Rayleigh waves
Earth's core
Examine how the theory of plate tectonics explains volcanic activity, earthquakes, and mountains
plate movement rift valley in Thingvellir National Park age of Earth's oceanic crust
For Students
plate tectonics summary
Quizzes
Cross section of Earth showing the core, mantle, and crust
Everything Earth
Cross section of Earth showing the core, mantle, and crust
The Solid Earth Quiz
Related Questions
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The outlines of the continents flanking the Atlantic Ocean are so similar that their correspondence was apparent as soon as accurate maps became available. The earliest references to this similarity were made in 1596 by Flemish cartographer Abraham Ortelius and later in 1620 by the English philosopher Francis Bacon, in his book Novum Organum, and by French naturalist Georges-Louis Leclerc, count de Buffon, a century later. Toward the end of the 18th century, Alexander von Humboldt, a German naturalist, suggested that the lands bordering the Atlantic Ocean had once been joined. In 1858 French geographer Antonio Snider-Pellegrini proposed that identical ...(100 of 14904 words)

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