Final answer:
Stress occurs when plates move apart, which is known as tension. It is a geological process that happens at divergent plate boundaries.
Step-by-step explanation:
Stress occurs when plates move apart. This process is known as tension. Tension can occur at divergent plate boundaries, where plates are moving away from each other. An example of tension is the formation of the Mid-Atlantic Ridge, where the North American and Eurasian plates are slowly moving apart, creating a gap where new crust is being formed.
Learn more about Plate tectonics