Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The idea of continental drift has been subsumed into the science of plate tectonics, which studies the movement of the continents as they ride on plates of the Earth's lithosphere. The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in … Nettet19. feb. 2024 · Continental drift describes the movements of continents over the Earth's surface. Sea-floor spreading refers to the creation new oceanic plate material and movement away from the mid-ocean ridge. It was Alfred Wegener in the early 1900's who brought forth the concept that the "shell" of the Earth's surface was fractured, and these …
Continental Drift from Pangea to Today - YouTube
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WHO, African Union Development Agency, and the International …
NettetThe continents, which are made of an insubmersible lightweight crust, passively drift with the movement of the lithospheric plates on which they sit. The animation illustrates the movements of the lithospheric plates from 250 million years in the past through to the present, as well as projections of continental movements 30 million years into the future. Nettet31. mar. 2024 · plate tectonics, theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and oceans. The … Nettet6. feb. 2024 · Feb. 6, 2024. Unlike on every other rocky planet in the solar system, Earth’s surface is a giant jigsaw puzzle whose pieces are constantly on the move. Each puzzle piece is a tectonic plate ... cherokee native american gods and goddesses