ATSC 113 Snow Final Exam Review Questions with Correct Answers

ATSC 113 Snow Final Exam Review Questions with Correct Answers Relative humidity - Answer-Percentage of the water the air holds, compared to how much it can hold. Low pressure system/Cyclone - Answer-BAD Weather -High percipitation -Strong winds -Low Visability - High pressure systems/anti-cyclone - Answer-Good Weather -Dry conditions -Little percipitation -Clear skys Wind Chill - Answer-Not actual Temperature, but what it feels like on the skin With cold fronts - Answer-Heavy snow Fall Blowing snow Clouds and fog Blizzard Conditions With Warm fronts - Answer-Blizzard Conditions Katabatic Wind - Answer-downslope movement of air that occurs in the absence of larger-scale wind flows. Snow density - Answer-the amount or mass of ice and liquid water per volume. Faceted crystals, - Answer-produced when a strong vertical temperature gradient exists. The water vapour is moving quickly, and crystal growth happens quickly. The rule of thumb is that faceting takes place when the temperature gradient is larger than 1°C per 10 cm depth, or equivalently 10°C per metre. Rounded crystals - Answer-produced when temperature gradients are weak, water vapour moves slowly, and crystal growth happens slowly. Typical rounding occurs when the vertical temperature gradient within the snowpack is less than 1°C per 10 cm depth, or equivalently, 10°C per metre.