Specification: This ?Tornadoes Model? is used for the study of the creation of Tornadoes and Twisters. These natural disasters are extremely dangerous, and are caused by Thunderstorms. This item uses water vapor for representing the creation of the spiral-shaped tornadoes. The tornadoes model has a cylindrical structure with a diameter of 60cm and 120 cm in height. The sides are covered with acrylic, which are separated into 2 parts. The front is transparent, and the back is closed. This model has water vapor creator installed. There is a fan for sucking out air. There are 4 light bulbs installed around the fan. The base is a wooden box covered with Formica plastic of dimensions 63x63x30 cm. The model uses 220VAC 50Hz.