71 points. remember to turn in a picture of your icard along with your submission. part #1: short-answer questions on water in the atmosphere 1. true or false: water vapor is only visible on really cold days where the air temperature is below freezing. 2. throughout the year, weather conditions change rapidly in champaign-urbana. during the summer months, strong southerly winds often bring high-dewpoint air from the gulf of mexico northward into the midwest. how do these strong southerly winds affect the vapor pressure? (increase, decrease, stay the same, you need to know the temperature to answer this question) 3. a beer koozie is designed to keep a beer cold. the koozie is effective at blocking heat transfer from your warm hand into the cold beer and it also prevents condensation from forming on the side of the beer. why does preventing condensation on a beer bottle keep the beer cool on a hot humid day? very briefly explain. 4. during a recent snowstorm, the temperature in champaign, il, was 27°f, the dewpoint was 25°f, and relative humidity was 92%. on a hot day last summer, las vegas, nv, recorded a temperature of 110°f, a dewpoint of 42°f, and a relative humidity of 10%. in which city was there more moisture in the air? very briefly explain. 5. every night when the sun sets, the air temperature decreases. how does the relative humidity change (increase, decrease, or stay the same) when the air temperature decreases?