Ans:  The term Storm indicates the different varieties of disturbances taking place in the earth's atmosphere. It may be an ordinary shower to snowstorms to thunderstorms. Disturbances that are related to wind such as Gales, sand storms, cyclones, tornadoes, etc. According to meteorological observations, the storm is limited to a certain wind velocity ranging from 103-117 kilometers per hour. It is also accompanied by heavy rainfall and lightning, and thunder from time to time.A tornado is also a type of storm which mainly comes in the rotational form and comes in contact with both air and earth surface and a cumulonimbus cloud.When a large number of sand and dust particles get lifted by a strong wind from the surface of dry soil into the atmosphere, the phenomenon is called a sand storm. It can be observed mostly in the desert areas like Dubai.Gales have the same phenomenon as that of cyclonic storms, but the wind velocity is a bit lower. In gales, the wind velocity ranges from 51 kilometers to 102 Kilometers.