Earthquake
An earthquake is a geological phenomenon that results from the release of energy from the Earth's interior, which causes the ground to shake. The energy released by an earthquake can be felt in the form of ground vibrations, which are called seismic waves. Earthquakes are caused by a number of different processes, including tectonic plate movements, volcanic activity, and the collapse of underground mines.
The most common cause of earthquakes is the movement of tectonic plates. The Earth's crust is divided into several large plates that are slowly moving, sliding, and colliding with each other. When two plates collide, the pressure between them builds up until it becomes too great and is released in the form of an earthquake. This type of earthquake is called a tectonic earthquake.
Volcanic earthquakes are another common cause of earthquakes. Volcanic earthquakes are caused by the movement of magma, ash, and gas within a volcanic system. When magma rises to the surface and erupts, it can cause the ground to shake. The explosive force of an eruption can also trigger earthquakes.
The collapse of underground mines can also cause earthquakes. This is because the removal of coal, minerals, and other materials can weaken the ground, causing it to collapse and shake. This type of earthquake is called a mining earthquake.