Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 113
etime, that the water at the bottom is at 4° C., while the waterat the top is above 4° C. This shows that water at 4° C. isheavier than water which is warmer. A little later it will be ob-served that the water at the bottom is still at 4° C., while thewater at the top is below 4° C. This shows that… … HEAT IN THE HOME 99 water has its greatest density at 4° C. or 39.2° F. This propertyof water has important consequences in nature. How a lake cools. — A lake cools in winter as follows: Thesurface layer cools, contracts, and sinks; the new surface layerthen cools, contracts, and sinks. This…
Physics · Home Economics
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