it may be gravity
tension
The plate boundary that pulls apart is called a divergent boundary. At this type of boundary, tectonic plates move away from each other, often creating new crust as magma rises from below the Earth's surface. Divergent boundaries are commonly found along mid-ocean ridges, where underwater volcanic activity occurs.
When a huge piece of crust diverges (pulls apart), the crust becomes fractured and magma spills out on the surface.
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.
Tension stretches or pulls apart the crust.
The force that pulls apart the crust is called tensional or extensional tectonic stress, which occurs at divergent plate boundaries where tectonic plates move away from each other. This pulling force can lead to the formation of rift valleys and mid-ocean ridges.
The force that pulls an object apart is called tension. Tension occurs when a material is stretched or pulled in opposite directions, causing it to become elongated.
The force that pulls tectonic plates toward each other is known as "slab pull." This occurs when a dense oceanic plate descends into the mantle at a subduction zone, generating a gravitational force that pulls the rest of the plate along with it.
Gravity is an attractive force wich pulls everything together, however, the universe is being pulled apart and therefore graviy is not what is doing this. The force which is pulling the universe apart is dark energy wich is a repulsive force which pulls everything apart.
Tensile stress.
it may be gravity
tension
Tensile stress is the force that pulls rock apart, causing it to break or fracture. This type of stress occurs when rocks are stretched in opposite directions, leading to the formation of cracks or faults in the rock.
Generally materials that fly apart are being pushed rather than pulled. We could devise a mechanism that pulls materials apart - for example, if we attach two hooks and pull them on winches in opposite directions. In that case we would describe the force as mechanical in nature. But it is more likely that things get pushed apart by their own internal pressure.
The force that pulls atoms apart is called fission. Nuclear reactors use controlled fission to produce massive amounts of energy.
Tension stress pulls rocks apart, causing them to stretch and potentially break along fractures or faults. This type of stress is common in divergent plate boundaries and areas experiencing extensional tectonic forces.