What are the differences and connections between earthquakes and volcanoes, mudslides and landslides?

the earth has three layers from the outside to the inside. Dead shell, mantle, center of the earth. Earthquake is the movement of the earth's crust! Due to the collision and compression of the earth's crust. There are both shear waves and longitudinal waves in an earthquake! There are deep earthquakes, Zhongyuan earthquake and shallow earthquakes. Among them, shallow earthquakes is the most harmful!

Volcanoes are weak areas of the earth's crust. According to the number of times, it is divided into active volcanoes and dead volcanoes. The mantle is a liquid lava flow, which causes volcanic eruption because of the different internal and external pressures!

Debris flow is a mixture of rock, cement and soil! Landslide is a disaster caused by the overall decline of gravity in mountain fracture!