Ten questions on the planet\'s most destructive events, each with the mechanism and the measuring scale explained.
Extreme natural events are ordinary geological and atmospheric processes concentrated in time and place. This quiz covers what triggers each type, how scientists measure severity, and why particular regions are repeatedly affected. It stays factual and avoids sensationalism, since the useful knowledge here is about mechanism and preparation. The explanations name the relevant scale where one exists and describe what it actually records.
Every question in this quiz is listed below with its correct answer and the reasoning behind it. Play first if you would rather not see the answers — or read through as a study sheet.
Play it insteadAnswer: B. Undersea earthquakes
Why: A sudden shift of the seafloor displaces a large volume of water. In open ocean the wave is low and fast, rising steeply only in shallow water.
Answer: A. The eye
Why: The eye is a region of sinking air with light winds and often clear sky. The most violent winds occur in the eyewall immediately around it.
Answer: D. The region where they occur
Why: They are the same phenomenon named differently by region: hurricane in the Atlantic and north-east Pacific, typhoon in the north-west Pacific, cyclone in the Indian Ocean and around Australia.
Answer: B. Earthquakes and volcanoes
Why: It traces the plate boundaries around the Pacific, where crust is being created and destroyed. Roughly three quarters of the world's active volcanoes sit along it.
Answer: D. The Enhanced Fujita scale
Why: The Enhanced Fujita scale rates tornadoes from EF0 to EF5 based on damage. Richter measures earthquakes and Saffir-Simpson rates hurricanes.
Answer: D. A prolonged period of below-normal precipitation
Why: Droughts are defined relative to what is normal for a region, so the threshold differs by place. They develop slowly and often end slowly.
Answer: B. Lava, ash and gases
Why: Eruptions emit molten rock, fragmented ash and gases including water vapour and sulphur dioxide. Ash and gas often cause more widespread disruption than lava.
Answer: A. An unstable layer within a snowpack
Why: A weak layer buried in accumulated snow gives way, releasing the mass above. Slope angle, recent snowfall and temperature changes are the main risk factors.
Answer: D. Wind, dry fuel and terrain
Why: Wind drives the front and carries embers ahead of it, while dry vegetation supplies fuel. Fires also move faster uphill, since heat rises to preheat the slope above.
Answer: C. More water arriving than the land or drainage can carry away
Why: Heavy or prolonged rain, snowmelt and storm surge all overwhelm capacity. Paving over ground worsens it by preventing absorption.
When the Earth Turns Violent has 10 questions and takes about 7 minutes to finish. It is rated Medium and sits in our Natural Disasters category.
Each of the 10 correct answers adds 10 XP, up to 100 XP for a clean run. Wrong answers cost you nothing, and your full question-by-question review is shown at the end.
Yes. All 10 questions carry a written explanation of why the correct answer is right, so the quiz works as a study sheet as well as a test.
Yes, as often as you like. The questions and the answer options are reshuffled on each run, and you can use Practice Mistakes afterwards to retry only the ones you missed. No account is needed to play.
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