Sea Floor Spreading For Kids

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Sea floor spreading for kids.

The process of sea floor spreading. Tripati in winter 2014 christopher lim casey le kristi yagi. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate. I didn t know it would come to this.

Plate tectonics plate tectonics hess s seafloor spreading model. The corner stone of plate tectonics is the theory of sea floor spreading. Ucla ess 15 ocean climate science communication project for prof. Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart.

Learn facts about seafloor spreading for kids. The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. According to this theory the floor of the ocean is moving or spreading away from ridges by repetitive magma intrusion that split and spread the older sea floor causing them to be moved away from the ridge in a nearly continuous horizontal position.

The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. At ridges in the middle of oceans new oceanic crust is created. The mid ocean ridge is the region where new oceanic crust is created.

The seafloor moves and carries continents with it. The seafloor moves and carries continents with it. Spreading rates determine if the ridge is fast intermediate or slow. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.

The motivating force for seafloor spreading ridges is tectonic plate pull rather than magma pressure although there is typically significant magma activity at spreading ridges. The first comprehensive attempt at such an explanation was made by harry h. Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. The existence of these three types of large striking seafloor features demanded a global rather than local tectonic explanation.

At ridges in the middle of oceans new oceanic crust is created. At the mid atlantic ridge and other places material from the upper mantle rises through the faults between oceanic plates. Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart.