Part #2: Short answer questions on Water in the Atmosphere+\' 1. True or False:
ID: 286406 • Letter: P
Question
Part #2: Short answer questions on Water in the Atmosphere+' 1. True or False: Water vapor is invisible to the naked eye. 2. If the winds in Champaign come directly from the south, the air often originates from the Gulf of Mexico. If the wind direction were to shift to the north, to now be coming from the north, what do you think would happen to the vapor pressure in Champaign? (Increase, Decrease, or stay the same) When water condenses onto the side of glass of iced tea, does this condensation warm the glass or cool it? Very briefly explain. 3. 4. Why does the air in winter in Champaign not contain much water vapor in it as compared to summer? 5. If I were to cool the air temperature in our classroom, how would the relative humidity respond?JExplanation / Answer
1. True : Water vapor is invisible to the naked eye.
We see an object when it scatters light and vapor
do not scatter visible light that reaches our eyes. Water vapour is a clear, colourless gas, therefore can not be seen by the naked eye.
2. Winds are formed by pressure differences in the atmosphere. Wind is the movement of air from area of low pressure and an area of high pressure.
In this Champaign for example, north is cooler air and south is warmer and more humid air. So vapor pressure in Champaign will decrease.
3. When water condenses onto the side of glass of iced tea, does this condensation warm the glass or cool it?
This condensation warm the glass because a cold glass of ice tea on a warm summer day condenses water. When hot, humid air comes in contact with a cold surface, condensation forms. For example, when you take a glass of iced tea outside on a hot humid day, little drops of water will form.
4. The air in winter not contain much water vapor in it as compared to summer because in summer season the amount of water vapourisation is more than winter. So in summer humidity will more than winter. In summer there will be very hot, so water particles turns to vapour or gas very rapidly than winters.
5. If we have to cool the air temperature in our classroom then relative humidity increases.
Relative humidity vary inversely with the temperature. The relative humidity is defined as amount of water vapor the air is holding. If there is increase in the temperature then the amount of water vapor the air can hold increases, so the relative humidity decreases.