The type of stress that takes place when plates move apart is called tension.
Tensional stress also known as extensional stress is known to be a type of stress occurs in the divergent plate boundaries, where two tectonic plates are said to be going or tearing away from one another.
This is known to be a normal fault that happens with volcanoes and underwater vents. if two plates slide past each other, they cause the stress known as shearing.
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