Multiple choice general knowledge math & puzzles The Fujita scale is used to measure which natural phenomenon? Tornado wind-intensity Ultra-violet indices Atmospheric ozone levels Tsunami volumes and heights Reveal answer Fill a bubble to check yourself A Correct answer Explanation The Fujita scale (F-Scale) is used to rate the intensity of a tornado based on the damage it inflicts on human-built structures and vegetation. It was later updated to the Enhanced Fujita (EF) scale.