Category Archives: Earth’s crust

Earth’s crust

Earth’s structure: The Earth consists of a core, mantle and crust, and is surrounded by the atmosphere. Tectonic plates: The Earth’s crust and the upper part of the mantle (lithosphere) are cracked into a number of large pieces called tectonic plates. Wegener’s theory  of continental drift (crustal movement) Alfred Wegener (1880-1930) proposed the theory of continental drift at the beginning of the 20th century. His idea

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