Evaporationin Our Daily Life

Topics: Water, Evaporation, Water vapor Pages: 6 (1958 words) Published: April 8, 2001
In a society based only on materialistic possessions, sometimes we overlook even the simplest of things, and the most valuable to our survival as a human race and as a planet. Everywhere around us people envy great architects and artists because of their remarkable creations. Though, we, as a human race disregard the importance of less tangible commodities, developed by the greatest artist ever, Mother Nature. She has given us the most magnificent and staggering artwork imaginable, our environment. But only through the most convoluted processes have these masterpieces been created. From humans to flowers and everything in between, a thorough process is behind everything. Before birth, for example, human must grow and develop through their three trimesters. Also before a plant is full-grown, it must first mature and survive as a seedling. Because although living creatures may be the most evident of Mother Nature's creations, there may be more to it.

Life is only possible in a suitable environment. On earth, that environment is created by our weather dynamics. Weather dynamics is the study of how the motion of water and air cause weather patterns. Our Global weather systems are reflections of our atmosphere and its make up. Weather systems react to the temperature, humidity, and atmospheric pressure. These three control systems are affected by one simple process, evaporation.

Evaporation is the conversion of liquid water directly into its vapor or gaseousstate. Through evaporation, water from the surface is transferred straight into the atmosphere. Worldwide, evaporation is usually seen as the moderator of weather. Evaporation controls cloud cover, surface temperature, humidity, and atmospheric pressure. All of these factors depend on the rate of evaporation and the differentiation in the rate of evaporation allows for the diverse climate conditions, which we see around the world each day.

This leads us to the question that must be answered, to know and understand the factors that affect the rate of evaporation. Through extensive thought and calibration we have found that the six factors, which effect evaporation are temperature, surface area, humidity, presence of foreign particles, atmospheric pressure, and wind speed.

The first and most important factor that affects evaporation is temperature. Temperature is the measure of the average amount of energy in the particles of a particular substance. Many people are probably already aware that when water boils, it will evaporate into the air as a vapor or gas until there is no liquid left in that particular container. This is true, because liquids achieve the peak level of evaporation when heated to their boiling point. What few realize though, is that as temperature decreases, there is still evaporation, the amount occurring at any given time though, does decrease with the temperature.

The reason why temperature affects evaporation is fairly simple to understand when referring to the collision model. In the collision model, it states that in order to increase the rate of any reaction you must either increase the number of collisions, or increase the fraction of collisions that are effective. Increasing the temperature allows the rate of evaporation to increase through two methods. First of all, in a true, constant environment, temperature of the water, and temperature of the surrounding air usually is fairly similar, so variations of surrounding temperatures do not often change the temperature of the water. But, by increasing the temperature of the water, it gives molecules more kinetic energy. This allows more molecules to break through or escape into the atmosphere by increasing the number of collisions with air particles. This raise in the temperature also increases the effectiveness of each collision by granting more molecules the activation energy required to escape into the surrounding air, therefore increasing the rate of evaporation significantly....
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