Question

At a boundary, plates move away from each other as magma pushes them from below. When this change happens beneath the ocean floor, it results in .

Answer 1

Divergent boundaries beneath the ocean lead to rift zones such as the Mid-Atlantic Ridge, where molten rock from the mantle creates new crust.

Step-by-step explanation:

When plates at a boundary move away from each other due to magma pushing them from below, specifically beneath the ocean floor, it results in the formation of a rift zone. In rift zones like the Mid-Atlantic Ridge, molten rock rises from the mantle to fill the space created by the diverging plates, forming new igneous rock, specifically basaltic lava, which constitutes most of the ocean basins. This divergent movement is driven by upwelling currents in the mantle, part of the process of convection where warm material rises and cooler material sinks, promoting the movement of Earth's lithospheric plates.

Answer 2

The first one would Be Divergent, and the Second One would be, Ridges