抄録
This research reports on a survey of a tornado made by the junior high school students who clarified the following in their investigation of the damage caused by the tornado. Generation point, way of whirlpool formation, Progress speed and traveling direction, Scale, Diameter, Identity of two kinds of tornadoes distance moved, Influence of river winds and Generation factor. Especially, it is reported that the junior high school students were able to point out the relation between the course of the tornado and the river winds.
