Title: Tension Pinyin: zhāng lì ? Basic Explanation 1. [Tension] 2. One of the two balancing forces that cause elongation. The tension of violin strings caused by the elongation of elastic objects explains in detail the mutual traction that exists in the object and is perpendicular to the contact surface of two adjacent parts when it is stretched. Xu Chi's Geological Light: "Does the so-called twisted Asian continent he wrote only refer to various stresses in nature-pressures, tensions and twists that cause various deformations in the Asian continent?" Or blame European and American geologists for explaining the orogeny in Asia with a narrow vision, which has caused many distortions and grievances in Asia? "Physical terms refer to the mutual traction existing on both sides of any section inside an object when the object is under tension. Please note that tension and liquid surface tension are not the same concept. The surface tension of water is intermolecular attraction, which tries to keep the surface area of liquid to a minimum, and among all shapes, only the spherical surface area is the smallest. Therefore, the liquid in weightlessness is spherical. As you said, crustal movement produces pressure and tension, and pressure is common in convergent plates, such as the collision between the Indian Ocean plate (the Indian continent is in front) and the Eurasian plate. Tension is common in separated plates, such as submarine spreading, Red Sea Rift and East Africa Rift. Pressure and tension are complementary in crustal movement. For example, many inland fault zones are not caused by the tension of separating plates, but by converging plates. For example, the pressure generated by the subduction of ocean plates under continental plates will inevitably lead to tensile cracks in weak links. For example, in the transition zone from Chengdu Plain to Qinghai-Tibet Plateau, the average crust transition from 35km to 65km in Longmenshan fault zone (called stress concentration point in material mechanics).