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When there is a divergent boundary, regardless if the plates are ocean-ocean or continental-continental, tensional stress pulls on the crust. Rocks have weaker tensional strength than compressive strength, so they are easier to pull apart.
When the tension (stress) is great enough, they will fracture or deform.
Ice wedging can break apart rocks when water seeps in cracks of roads or rocks and continues freezes and thaws until the rock eventually creates a pot hole
erosion can break rocks apart, weathering can also break rocks apart
Rocks in the crust are put under a pulling stress, or tensile stress, when tectonic plates are moving apart from one another. A good example of this is the Rift Valley in Africa.
This is known as a normal fault.
tension
yes tension pulls the rocks apart which produces expanding faultscompression pushes the rocks together which produces crushing faultsshear slides the rocks past each other which produces slipping faults
tension
tension
When there is a divergent boundary, regardless if the plates are ocean-ocean or continental-continental, tensional stress pulls on the crust. Rocks have weaker tensional strength than compressive strength, so they are easier to pull apart.
Rocks being pulled apart are under tension. This is found at divergent plate boundaries. It is a tension fault.
Tensional stress.
Normal Fault
The type of stress that causes rocks to pull apart is a tension stress. It is the major type of stress found in divergent plate boundaries.
Stress that acts to pull materials (including rocks of the crust) apart is known as tensile stress.
The type of stress that causes rocks to pull apart is a tension stress. It is the major type of stress found in divergent plate boundaries.