A daily temperature curve exhibits a lag of about 3 hours relative to an insolation curve.

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Quizplus · Accepted Answer

This is true. The temperature of the Earth's surface does not immediately respond to changes in the amount of solar radiation received. It takes some time for the heat absorbed by the Earth's surface to be transferred into the atmosphere and for temperature changes to occur. Therefore, there is a lag between the insolation curve (which shows the amount of solar radiation received) and the temperature curve. This lag is typically about three hours.

A Daily Temperature Curve Exhibits a Lag of About 3