Tornadoes! (New & Updated Edition)By: Gail Gibbons What in the world is a tornado? In this age of extreme weather, this newly updated edition of Gail Gibbons' informative introduction to tornadoes, with safety tips included, answers that question. Tornadoes form when hot, humid air rises from the ground and meets with the cooler, denser air that is falling back to Earth. The two airstreams begin to swirl, pulling in more and more air to form a funnel shaped cloud. The winds can swirl
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