WebPlate Tectonics, Seafloor Spreading, and Continental Drift Fig.1 Plate tectonics is a relatively new theory from the 1960’s that revolutionized the way geologists think about the Earth. According to plate tectonic theory, the outermost shell of the Earth is mobile, and broken into several large (and many smaller) tectonic plates that change size, shape and position over … WebJul 23, 2024 · How does seafloor spreading move the continents? Seafloor spreading is the mechanism for Wegener’s drifting continents. Convection currents within the mantle take the continents on a conveyor-belt ride of oceanic crust that over millions of years takes them around the planet’s surface.
Seafloor spreading Evidence & Process Britannica
WebWhen the concept of seafloor spreading came along, scientists recognized that it was the mechanism to explain how continents could move around Earth’s surface. Like the scientists before us, we will now merge the ideas of continental drift and seafloor spreading into the theory of plate tectonics. WebApr 12, 2024 · So same composition of magma (from molten mantle), but different textures. 04/12/23 12 Ocean basins ultimately originate when continental landmasses split apart Early evidence of seafloor spreading. 1. Jigsaw puzzle fit of continents (first noted by Alfred Wegener) 04/12/23 13 Early evidence of seafloor spreading. 2. Fossil evidence. Fossils of ... sfa teaching
Sea-Floor Spreading Flashcards Quizlet
WebSeafloor spreading is the process by which magma within the Earth's crust emerges at the mountain ranges and separates the sea floor. The magma creates a new section of sea floor, which explained why the oceanic crust looked so young -- … WebAccording to the theory proposed by Harry Hess, seafloor spreading causes continents to move. Score 1. Log in for more information. Question. Asked 6/20/2024 9:31:42 PM. Updated 1 hour 1 minute ago 4/11/2024 8:03:01 PM. 0 Answers/Comments. This answer has been confirmed as correct and helpful. f. WebSeafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere. The motivating force for seafloor spreading … sfa university baseball