A Pondering Of Grass - Knowledgebase Question

Syracuse, NY
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Question by humpernikle3
December 17, 2000
Q: Why does grass stay cooler than the road on a summer day?


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Answer from NGA
December 17, 2000
Off the top of my head, there are several reasons. One, the hard road will absorb heat and thus amplify it and as a result is warmer than the soil beneath the grass. Next, evaporation of moisture from the soil and transpiration by the grass serve to cool the grass.

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