Natural processes of the earth leading to adverse effects are Natural Disasters. Earthquakes, Volcanoes, Floods, Tsunami, and other geological processes are Natural Disasters. Adverse effects in an area of vulnerable population will result in disaster. Natural Disaster may cause Loss of Life, or Damage to property .sudden release of energy in the Earths crust that is capable of creating seismic waves results in Earthquake. Water overflow submerging dryland os called Flood. Dangerous rotating column of the earth that is in contact with cloud and surface of the earth is tornodo. Majority of natural disaster are meteorological disasters and minor disasters are geophysical events.