Geography
Forms of condensation: dew, frost, fog, and mist
Practice questions
In which identification is it most necessary to consider both dew point and freezing point?If fog is denser in the lower part of a road which cause is likely?Why is air moisture observed in a frost forecast?In which situation is dew more likely than frost?If a polluted city has high relative humidity and calm air why does fog risk increase?What common element connects mist and fog with clouds?If clouds arrive after frost formation what effect may occur on further cooling?If a farmer covers crops to protect them from frost what is the geographical reasoning?If fog is greater at the foot of a hill and less at the summit what does it indicate?Why does visibility fall sharply when the number of fog droplets increases?Why is cooling of lower air important for both fog and mist?When can closeness to an open water surface help dew formation?In which condition can morning mist persist longer instead of clearing quickly?If frost is formed on a surface why will it not be called fog?Dew and frost may have the same water vapour source yet why is their final form different?If very cold dry air is blowing over a field what will be the main limitation for frost formation?After sunrise which common process can reduce both dew and fog?What is the best reason why rainfall may not occur even when visibility is low in fog?If droplets are in air and floating rather than deposited on the ground what does this indicate?Why is dew generally not considered as damaging to crops as frost?