A Pondering Of Grass - Knowledgebase Question

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

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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