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地震的成因除火山喷发外,主要是地壳的岩层发生断裂引起的。它会使周围地区地层发生变化,因此可以自制模型进行模拟演示。模型一用废报纸裁成300×40(毫米)的纸条,叠成80～100毫米高。在它摩擦力实验的改进
In addition to volcanic eruptions, the origin of the earthquake was mainly caused by the fracture of the crust in the crust. It changes the strata in the surrounding area, so you can model your own model for a demo. The first type of paper was cut into 300 × 40 (mm) strips of waste paper and stacked to a height of 80 to 100 mm. Improvement in its friction experiment