Cirrus clouds (cloud classification symbol: Ci) are a genus of atmospheric clouds generally characterized by thin, wispy strands, giving them their name from the Latin word cirrus meaning a ringlet or curling lock of hair.
They form when water vapor undergoes deposition at altitudes above 5,000 m (16,500 ft) in temperate regions and above 6,100 m (20,000 ft) in tropical regions.
Matt: CORRECT
Record: 494-418
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