WebThe theory of plate tectonics argues that Earth's outer layer—the crust—is composed of large platelike sections of solid rock. These crustal plates essentially float on weaker layers of partially melted rock in the mantle below. Scientists believe that convection circulation within the mantle helps continents to move. Webcontinental drift n (Geological Science) geology the theory that the earth's continents move gradually over the surface of the planet on a substratum of magma. The present-day …
Continental drift - Definition, Meaning & Synonyms
Webuncountable noun continental drift Continental drift is the slow movement of the Earth's continents towards and away from each other. 3; noun continental drift the theory that the earth's continents move gradually over the surface of the planet on a substratum of magma. The present-day configuration of the continents is thought to be the result of the … WebApr 4, 2024 · continental drift in British English noun geology the theory that the earth's continents move gradually over the surface of the planet on a substratum of magma. The present-day configuration of the continents is thought to be the result of the fragmentation of a single landmass, Pangaea, that existed 200 million years ago See also plate tectonics drako moeda
Plate tectonics Definition, Theory, Facts, & Evidence
WebThe continental drift hypothesis was developed in the early part of the 20th century, mostly by Alfred Wegener. Wegener said that continents move around on Earth’s surface and that they were once joined together as a single supercontinent. WebIf Continental Drift had not occurred, the alternative explanations would be: The species evolved independently on separate continents – contradicting Darwin’s theory of evolution. They swam to the other continent/s in breeding pairs to establish a second population. Webcontinental drift noun [ U ] us / ˈkɑnt· ə nˈent· ə l ˈdrɪft, -təˈnen- / earth science the theory that the continents were once one large area of land that broke apart and are now slowly … drakomon apk