WebRidge Push. The process that results when magma rises at a mid-ocean ridge and pushes oceanic plates in two different directions away from the ridge. Slab pull. The process that results when a dense oceanic plate sinks beneath a more buoyant plate along a subduction zone, pulling the rest of the plate that trails behind it. convection. WebOct 30, 2014 · Ridge push is a gravitation force that causes a plate to move away from the crest of an ocean ridge, and into a subduction zone. The Slab pull force is a tectonic plate …

4.1: The Forces Driving Plate Motions - Geosciences LibreTexts

WebRidge push is thought responsible for the motion of these plates. The subducting slabs around the Pacific Ring of Fire cool down the Earth and its core-mantle boundary. Around … WebRidge push or sliding plate force is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding … science of nursing ppt

Seafloor spreading - Wikipedia

WebMay 23, 2024 · Gravity causes the higher plates to push away the lithosphere that is placed in the further parts of the ridge. The third force that causes the tectonic plates to move is the slab pull. This force occurs when the older plates start to sink. As the plates age, they become colder, which makes them denser than the mantle beneath them. WebJan 17, 2024 · The ridges are only a few kilometers high but hundreds wide. The slope on the flanks of a ridge means that diverging plates get an assist from gravity, a force called "ridge push" that, together with slab pull, accounts for most of the energy driving the plates. On the crest of each ridge is a line of volcanic activity. Webridge-push The hypothetical force, caused by the horizontal spreading of the near-surface asthenosphere at constructive margins, which is thought to be one of the two main driving forces for the movement of lithospheric plates (the other is slab-pull ). A Dictionary of Earth Sciences Slickenside slickenside 1. pratts car park leeds