SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Relative humidity is 29% with clear skies.
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Relative humidity is 29% with a good chance of snow.
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Relative humidity is 93% with clear skies.
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Relative humidity is 93% with a good chance of rain.
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Detailed explanation-1: -A dry-bulb temperature of 30°C and a wet-bulb temperature of 29°C were recorded at a weather station. What are the relative humidity and the most likely weather conditions? Relative humidity is 93% with clear skies.
Detailed explanation-2: -Now, the difference between the dry bulb and wet bulb temperature is (12-7=5) 5∘C 5 ∘ C . Now, looking 12∘C 12 ∘ C from row side and 5∘C 5 ∘ C from column side, where these two temperatures meet, that point is dew point temperature. Therefore, Dew point comes out to be 1∘C 1 ∘ C from the table.
Detailed explanation-3: -Relative humidity can be found by subtracting the temperature on the wet-bulb thermometer from the temperature on the dry-bulb thermometer and using a relative humidity chart.
Detailed explanation-4: -Q. What is the dewpoint when the dry bulb temperature is 20°C and the relative humidity is 17%? Q. The dew point is 15°C.
Detailed explanation-5: -Use the formula for wet-bulb temperature: Tw = T × arctan[0.151977 × (RH% + 8.313659)^(1/2)] + arctan(T + RH%)-arctan(RH%-1.676331) + 0.00391838 ×(RH%)^(3/2) * arctan(0.023101 × RH%)-4.686035.