Question

Explain how it is possible to have ice or frost on the ground at a weather station even though the station minimum thermometer did not reach the freezing point. Assume that the minimum thermometer is functioning properly. [Hint: think of where the thermometer is typically located] (Mark 10)

Answer 1

Answer:

Sometimes frost can occur on your lawn overnight, even though your thermometer may never have dropped to the freezing mark. This is because cold air on clear, calm nights sinks to ground level. Temperatures at the ground can be lower than the temperature only a few feet higher where your thermometer may be located.

Explanation:

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