The Sirocco is responsible for the mysterious “blood rain” in Italy. This hot wind picks up reddish dust from the Sahara Desert. As it crosses the Mediterranean Sea, it gathers moisture. When it rains in Southern Italy, the water traps the red dust and falls to the ground, leaving behind a rusty, mud-like film that looks like blood. ANSWER: (C) Sirocco
Which of the following local winds brings ‘blood rain’ to Italy? (A) Samoon (B) Simoom (C) Sirocco (D) Shamal
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“Blood rain” sounds scary, but it is actually just a mix of desert sand and water. The Sirocco wind acts as a giant vacuum, sucking up fine silt from the North African desert. Because the dust is so light, it stays in the air as the wind travels over the sea toward Europe. When the air cools and turns into rain, the raindrops act like filters that pull the red dust out of the sky. This phenomenon is a perfect example of how the atmosphere connects different continents, moving parts of Africa all the way to the streets of Italy.
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