1. Avalanche: a mass of snow, ice, and rocks falling rapidly down a mountainside
2. Volcanic eruption: the sudden occurrence of a violent discharge of steam and volcanic material
3. Tsunami: A long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
4. Cyclone: a system of winds rotating inwards to an area of low barometric pressure, with an anticlockwise (northern hemisphere) or clockwise (southern hemisphere) circulation
5. Earthquake: a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.
6. Blizzard: a severe snowstorm with high winds
7. Hailstorm: a storm of heavy hail
8. Hurricane: a storm with a violent wind
9. Drought: a prolonged period of abnormally low rainfall, leading to a shortage of water
10. Sand dune: a dune is a hill of sand built by either wind or water flow. This is common in deserts.
11. Landslide: a collapse of a mass of earth or rock from a mountain or cliff
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