The relative humidity at De Anza College would be _____________________ when the temperature is the lowest:

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BlackTom AI · Accepted Answer

The question asks about relative humidity (RH) at De Anza College when the temperature is at its lowest. RH is defined as the ratio of the current amount of water vapor in the air to the maximum amount the air can hold at that temperature (saturation vapor pressure), expressed as a percentage. When the temperature drops, the air’s capacity to hold water vapor (saturation vapor pressure) decreases, so for the same amount of water vapor in the air, the RH increases. In other words, cooler air with the same moisture content tends to be more humid relative to its capacity.

Option 96%: This value fits the scenario of high relative humidity that would occur at the coldest part of the day, given the air has not lost moisture and the saturation capacity is reduced. It aligns with the expectation that RH increases as temperature falls.

Option 89%: This would indicate a moderately high RH, but not the peak effect expected at the lowest temperature. If the temperature is at its minimum, the RH is unlikely to be this low unless there is a concurrent drop in actual moisture or a significant increase in saturation capacity, which is not consistent with the “temperature is the lowest” condition driving higher RH.

Option 100%: While 100% RH is possible when air is fully saturated, it requires that the air contains exactly as much moisture as the maximum it can hold at that temperature. At the absolute lowest temperature, reaching exact saturation is possible but not guaranteed; 100% would imply the air is at the brink of condensation everywhere, which is not a given scenario without additional context.

Option 92%: This value represents a high RH but somewhat lower than what would be expected if the temperature is at its lowest and the moisture content remains the same. It could occur if the air is not as close to saturation as at the minimum temperature, making it a less likely outcome under the stated condition.

In summary, the reasoning hinges on the inverse relationship between temperature and saturation vapor pressure: as temperature decreases, RH tends to rise if the moisture content remains constant, making higher RH values like 96% more consistent with the scenario than lower or unconstrained values. The other options represent plausible but less consistent RH values given the lowest temperature condition.

F25 MET D010L 65Z Meteorology Lab Investigation4 Quiz

The relative humidity at De Anza College would be _____________________ when the temperature is the lowest:

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