Поиск

Полнотекстовый поиск:
Где искать:
везде
только в названии
только в тексте
Выводить:
описание
слова в тексте
только заголовок

Рекомендуем ознакомиться

Остальные работы->Реферат
Money takes on a new meaning when there are children in the family. Parents realize the added pressure on the family’s income to cover more wants and ...полностью>>
Остальные работы->Реферат
The Scarlet Letter, written by Nathaniel Hawthorne is a book about Hester Prynne, a woman whose one night of passion leads to a lifetime of punishment...полностью>>
Остальные работы->Реферат
His books are seldom read today, and his legend almost a faded memory. But in the 1930s and 1940s Ernest Hemingway was a literary idol–and role model ...полностью>>
Остальные работы->Реферат
which refer to content based decisions made by judges, as a tool employed in matters of judicial review and has become the dominant means of legislati...полностью>>

Главная > Реферат >Остальные работы

Сохрани ссылку в одной из сетей:

Scientific Method ? Deforestation in Rhondonia, Brazil

Observation:

In one of the major regions of deforestation, the province of Rhondonia, Brazil, the rainfall has been severely and or completely stopped.

Theory:

As the tropical rainforest of Rhondonia, Brazil is leveled for farmland, rainfall is significantly and directly reduced. Rainfall is reduced because there are fewer trees to return water vapor to the air through tree transpiration, or water evaporation through trees. Relative humidity is the amount of water vapor in the air compared with the amount of vapor needed to make the air saturated at the air?s current temperature. The point past saturation is precipitation, or rainfall. If deforestation is the cause of decreased rainfall, then decreased average relative humidity will be evident.

Experimental Design:

In order, to isolate deforestation as the primary factor causing decreased rainfall, tests will be conducted to measure relative humidity. A sling psychrometer will be used to gain these measurements.

http://www.taftan.com/thermodynamics/HYGROMT.HTM

It is used to measure the amount of moisture in the air. The dry-bulb thermometer measures the air temperature, and the wet-bulb measures the lowest temperature that can be obtained by evaporating water into the air at constant pressure. A calculator will be used to convert to relative humidity.

http://www.srh.noaa.gov/elp/wxcalc/rh.html

El Paso National Weather Service Office’s weather calculator

This converter will take the wet-bulb temperature, the air temperature and the current uncorrected pressure and calculates the relative humidity and dewpoint.

Please enter your air temperature and then choose either Fahrenheit or Celsius.

Fahrenheit Celsius

Please enter your wet-bulb temperature and then choose either Fahrenheit or Celsius.

Fahrenheit Celsius

Please enter your actual station pressure (not sea level pressure) and then choose either millibars or inches of Mercury.

Millibars Inches of Mercury

Relative humidity measurements will be taken every day for one year. The measurements will be taken at different stations in the rainforest. Four stations will be located no further than 10 miles from current areas of deforestation. Four other stations will be located at the interior of the rainforest, and at least 50 miles from recent deforestation. After these measurements are taken, they will be analyzed in three different ways.

Run Experiment:

The daily measurements were tracked for one year.

Comparison 1 – The recent relative humidity measurements of the rainforest will be compared to previous figures of relative humidity. The average off all relative humidity measurements will be compared to the relative humidity of the rainforest before this experiment.

Comparison 2 ? Recent relative humidity measurements of different regions of the rainforest will be compared. Measurements from areas near to sites of deforestation will be compared to measurements from sites further from areas of deforestation.

Comparison 3 ? Measurements towards the end of the study will be compared to measurements at the end of the study. Average relative humidity measurements for the first month of the study will be compared to the average from the last month.

Analysis:

Comparison 1 – Taking the average of all measurements and comparing it to the average relative humidity from the prior year it was found that the average relative humidity had dropped one percent.

Comparison 2 ? Taking the average of each stations relative humidity, it was found that all stations within 10 miles from deforestation had an average of two percent lower that stations at least 50 miles from deforestation.

Comparison 3 ? Taking the average relative humidity for the last month from all stations and comparing it to the first months average it was found that the average had dropped .5 percent over the year.

Conclusion:

The findings suggest that deforestation is affecting the amount of rainfall in Brazil. The deforestation will not only continue to affect rainfall but will lead to increased global warming as evaporative cooling decreases. Evaporative cooling takes place when solar energy, or heat, is used to convert water from trees to water vapor or humidity.


Загрузить файл

Похожие страницы:

  1. Examples Of The 4 Faces Of Power

    Реферат >> Остальные работы
    Examples Of The 4 Faces Of Power Essay, Research Paper Four Faces of Power An example of the ... first face of power would ... would be unaware of it. An example of the fourth face of power would ...
  2. Examples Of Charles Dickens Chthonic Journeys Essay

    Реферат >> Остальные работы
    Examples of Charles Dickens Chthonic ... Dickens autobiographical memoir Fragments of an Autobiography what are ... essay there are countless examples as to how Dickens ... the essay is an example because it means that ... hero life and his example to preserver during tough ...
  3. Examples Of Differences In University Education Essay

    Реферат >> Остальные работы
    Examples Of Differences In University Education Essay, ... tarnished in past years. One example of how we could increase the ... think Washington State has some of the fetter facilities and ... now I could think of going anywhere else. University of Oklahoma Web page ...
  4. Example of Church-State cooperation

    Реферат >> Иностранный язык
    Example of Church-State cooperation ... session of the State antinarcotics’ committee of Federal Department of the ... ’ committee, the director of FSKN of Russia V.P.Ivanov, has ... education of youth, charity, voluntary movement, support of groups of the ...
  5. Of Mice And Men Essay Essay Research

    Реферат >> Остальные работы
    ... punching Lennie are good examples of how not communicating properly ... around you. A good example of this is Crooks. Crooks ... little place. Another good example of confusing people around you ... Curley is a really good example of this. When Curley finds out ...
  6. Of Mice And Men Burdens Of Responsibility

    Реферат >> Остальные работы
    ... improve their standard of living. An example of this is would ... frustration or nuisance. An ideal example of this would be Curley when ... more often than not. Examples of these instances are when ... in a state of utopia, his reward. An example of Curley’s wife’s ...

Хочу больше похожих работ...

Generated in 0.0024778842926025