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Winter forest with lake and trees reflected in it

282 views • 12 times solved • Feb 1, 2023

Winter forest with lake and trees reflected in it

The lakes in winter have a special, breathtaking beauty that creates a magical atmosphere and a desire to skate on the icy surface. If the lake is small, then in the frost the water in it can freeze to the very bottom. However, on most lakes, only an ice crust appears at the top, and the rest of the water under it just becomes colder. Why is this happening? The fact is that at a water temperature of 40 °F, its density acquires a maximum value and sinks to the bottom of the reservoir. The water that remains on the surface cools to lower temperatures, becoming less light and subsequently turning into ice, which does not allow the water under it to drop to lower temperatures.

Number of pieces Times solved The fastest time The slowest time The average time
24 1 6m 0s 6m 0s 6m 0s
54 5 7m 0s 9m 42s 7m 58s
96 2 36m 54s 37m 11s 37m 2s
150 3 23m 2s 1h 8m 12s 40m 2s
216 1 40m 42s 40m 42s 40m 42s
294
384
486

Published: Feb 1, 2023
Updated: Feb 1, 2023

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