Download PDF by Barbara Shaw McKinney: A Drop Around the World

By Barbara Shaw McKinney

This booklet is a year-after-year favourite with lecturers. It engagingly leads readers all over the world following a drop of water - no matter if as steam or snow, inside of a plant or animal, or underground - educating the wonders and value of the water cycle. (There is a lot of geography, too.) 4 pages of technology concerning the characteristics of water are integrated.

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Condensing Cold Cooler temperature slows them down again and the molecules condense to a liquid— as rain, dew, or drops on the side of your cold glass. This is the mist you might see early in the morning either when cool air hits warmer air near the ground, or warm air hits cooler air close to the ground, depending on the season. The tiny droplets are quickly burned off when the sun warms them and they evaporate. The steamy rainforest cycles lots of water, round and round beneath its canopy, so there’s lots of condensed water vapor in the air, appearing as mist.

There, winds spread them like feathers across the sky. • Fog is simply a cloud close to the ground. Heavy Magic Water is heavy. If you’ve ever had to haul a bucket of water, you know how heavy it is—a pound for every pint. For this reason, deep sea divers must wear special equipment to withstand the great weight pressing down on them. The weight of water at 300 feet down is ten times heavier than at the surface. In the deepest parts of the ocean a piece of wood might actually compress to half its size under the tremendous pressure.

Unlike other planets, Earth has lots of water in all three forms: solid, liquid, and gas. Most important, Earth’s perfect distance from the sun lets water flow as a liquid. Water on planets closer to the sun would evaporate in the great heat. Water on planets farther away from the sun would freeze in the extreme cold. In all three states, but especially as a liquid, water helps to keep Earth’s temperature moderate. Unlike land, which heats up quickly in the sun but cools off just as fast at night, water absorbs the sun’s heat slowly and stores it for a long time before returning it to the air.

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A Drop Around the World by Barbara Shaw McKinney

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