Science for beginners . Fig. 128.—Cirrus clouds. Light feathery clouds that float at an eleva-tion of 4 or 5 miles above the earths surface. When in the form ofplumes with frayed and torn edges increasing cloudiness and rain orsnow are usually indicated, especially if the clouds are moving moving very slowly seldom indicate an approaching storm. Intemperate latitudes cirrus nearly always move from a westerly Fig. 129.—A cumulo-nimbus, or thunder head. This cloud has begunto rain, but not long ago. The longer cirrus fringe at A shows that por-tion probably began raini
Science for beginners . Fig. 128.—Cirrus clouds. Light feathery clouds that float at an eleva-tion of 4 or 5 miles above the earths surface. When in the form ofplumes with frayed and torn edges increasing cloudiness and rain orsnow are usually indicated, especially if the clouds are moving moving very slowly seldom indicate an approaching storm. Intemperate latitudes cirrus nearly always move from a westerly Fig. 129.—A cumulo-nimbus, or thunder head. This cloud has begunto rain, but not long ago. The longer cirrus fringe at A shows that por-tion probably began raining before the other visible portions. THE WATER VAPOR OF THE AIR 173
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
