Water Temperature And Evaporation Rate

Water Temperature And Evaporation Rate This report details the scientific method used to investigate the effects of water temperature on the rate at which the water will evaporate. Project design plan: Problem statement The purpose of this experiment was to compare the effect of temperature on the evaporation rate of water. The vision was to establish three containers of water. Each container contains the same amount of water. Surrounding air and humidity are kept consistent. One container is kept at a consistent room temperature; one container is kept at a heated consistent temperature; one container is kept at a cooled consistent temperature. The issue being examined is how the three different water temperatures impacts the rate at which the water evaporates from the container. The experiment was conceived as part of an effort to learn more about Global Warming. Since the world is made up of approximately 75% water, there is a desire to understand how increases in water temperature impacted the evaporation of water and if Global Warming could impact the worlds water base. Relevance of the question evaporation is the scientific process where a liquid is converted to a gas state by increasing the speed of its moleculars which causes a release in energy. Water evaporates faster at higher temperatures although any amount of heat resulting from the release of this energy will cause water to evaporate. Literature review http://www.engineeringtoolbox.com/evaporation-water-surface-d_690.html this site provides a detailed process and mathematical equations for calculating the amount of evaporated water from a water surfaces. The amount of evaporation depends on the temperature in the water and in the air, and the humidity and velocity of the air above the surface. This site can be used as a reference to determine the level at which evaporation will occur in the experiment. http://www.usc.edu/CSSF/History/2002/Projects/J0615.pdf this site provides the results of an experiment that measured which factor had the greatest effect on the rate of evaporation of water. The factors tested were surface area, wind speed, air temperature and water temperature. The results of this experiment validated the hypothesis for this experiment. Experimental design The constants in this experiment were: à ¢Ã¢â€š ¬Ã‚ ¢ The type of water (tap) à ¢Ã¢â€š ¬Ã‚ ¢ The amount of water à ¢Ã¢â€š ¬Ã‚ ¢ The location where the water is placed à ¢Ã¢â€š ¬Ã‚ ¢ The size of the container à ¢Ã¢â€š ¬Ã‚ ¢ The number of test conducted à ¢Ã¢â€š ¬Ã‚ ¢ The type of the container à ¢Ã¢â€š ¬Ã‚ ¢ The length of time the water has to evaporate Materials Used Quantity Item Description 1 Small home humidifier 1 Gallon jug of tap water 1 Graduated measuring cup 1 Digital wall mounted temperature and humidity gauge 3 8 ounce glass glasses 1 Digital thermometer 1 4 foot square, 3 foot high table 1 4 inch circular electrical heating plate 1 Thermos 1 Digital timer 1 1212 terry cloth cooling towel Steps executed in the experimental procedure 1. Collect all required materials 2. Stabilize and maintain the humidity in testing room using a small home air humidifier. For the testing, the humidity was stabilized at 40%. 3. Stabilize and maintain the temperature in testing room using the home HVAC system. For the testing, the room temperature was stabilized at 70 °. 4. Stabilize and maintain the air speed in testing room using isolated room. For the testing, the air speed was essentially dead calm. Note: no special equipment was used to stabilize the air speed. The test was conducted in an isolated room. There was some air movement introduced into the room through stabilizing the room temperature and humidity but was considered not significant enough to impact the tests. 5. Place a gallon jug of tap water in the testing room for 3 days so it adjusts to the room temperature and humidity. 6. Pour 100 ml. of tap water from the gallon jug stabilized to testing room temperature into each of 3 identical 8 ounce glass glasses using a graduated measuring cup. 7. Place the glasses into the center of the room on a table 3 feet off the floor so they are being equally affected by room temperature, humidity, and air movement. 8. Using a 4 inch, circular heating plate, place one of the glasses on the heating plate. The heating plate will raise the temperature of the water in the glass to 140 degrees. Note: it takes 30 minutes for the heating plate to heat the water in this glass to the 140 degree mark. Once this consistent temperature is reached, the volume of the water in this glass is rechecked to make sure the testing starting point is 100 ml. 9. Using a thermos, cooled via keeping it in a refrigerator for 24 hours, insert one of the glasses inside the thermos. The thermos will lower the temperature of the water in the glass to 35 degrees. Note: it takes 30 minutes for the thermos to cool the water in this glass to the 35 degree mark. Once this consistent temperature is reached, the volume of the water in this glass is rechecked to make sure the testing starting point is 100 ml. 10. Place a glass on the table and let it stabilize to the room temperature. Note: it takes 30 minutes for the water in this glass to stabilize to the room temperature degree mark. Once this consistent temperature is reached, the volume of the water in this glass is rechecked to make sure the testing starting point is 100 ml. 11. Using the timer, let the water sit in the testing room at the 3 different temperatures for 180 minutes. 12. Using a graduated measuring cup, measure the remaining water in milliliters from each glass. 13. Record how many milliliters remained after evaporation for each temperature for each test. 14. Repeat steps 11-12 for 2 more cycles. Total evaporation time is 9 hours. 15. Wait 24 hours from the start of the test. Repeat steps 1-14. 16. Repeat steps 14 one more time. Reason for choosing this particular experimental design plan the reason for this particular experimental design plan was to provide 3 water sources maintained at 3 different temperatures kept in a controlled humidity, room temperature and air rate environment. This environment was expected to provide a static environment to allow water evaporation to progress solely based on the temperature of the 3 water sources. Using identical starting water amounts and a graduated measuring cup to measure the resulting water amounts was expected to provide the most accurate results. Sequence of events used to collect quantitative data 1. Using the timer, let the water sit in the testing room at the 3 different temperatures for 180 minutes. 2. Using a graduated measuring cup, measure the remaining water in milliliters from each glass. 3. Record how many milliliters remained after evaporation for each temperature for each test. 4. Repeat steps 1-3 for 3 more cycles. Total evaporation time is 9 hours. 5. Wait 24 hours from the start of the test. Repeat steps 1-4. 6. Repeat steps 5 two more times. Tools, technologies, and measurement units used to collect quantitative data The recorded variable was the amount of water in milliliters that remained after evaporation was allowed to occur over in 180 minutes. The water in the 3 glass glasses was measured in milliliters using a graduated measuring cup before and after the evaporation occurred. Dependent, independent, and controlled variables Dependent variables the observed result of the independent variable being manipulated was the resulting water amount in each glass after evaporation has occurred Independent variables the value being manipulated or changed in this experiment was the water temperature of the water contained in the 3 glass glasses. Controlled variables the controlled variables were the air humidity, the air speed, the room temperature, the type of water (tap), the amount of water, the location where the water was placed, the size of the containers used, the number of tests conducted, the type of the containers used, and the length of time the water had to evaporate. Threat reduction to internal validity To reduce the threats to internal validity the following steps were taken: 1. Stabilize and maintain the humidity in testing room using a small home air humidifier. For the testing, the humidity was stabilized at 40%. 2. Stabilize and maintain the air speed in testing room using isolated room. For the testing, the air speed was essentially dead calm. Note: no special equipment was used to stabilize the air speed. The test was conducted in an isolated room. There was some air movement introduced into the room through stabilizing the room temperature and humidity but was considered not significant enough to impact the tests. 3. Stabilize and maintain the room temperature in testing room using the home HVAC system. For the testing, the room temperature was stabilized at 70 °. 4. Stabilize the water used by placing a gallon jug of tap water in the testing room for 3 days so it adjusts to the room temperature and humidity. 5. Stabilize the test environment by placing the glasses into the center of the room on a table 3 feet off the floor so they are being equally affected by room temperature, humidity, and air movement. Hypothesis The hypothesis was that the temperature of the water would affect the evaporation rate of the water the most and that the higher the water temperature, the more evaporation that would occur. The hypothesis proposed that the warmer the water, the more molecules escaped as vapor, and thus evaporated. The hypothesis theorized that the warmer the waters molecules were the more energy that would be produced and the amount of molecules escaping as vapor would occur at a much faster pace than molecules at lower temperatures. Process of data collection: At the end of each evaporation cycle of 180 minutes, the contents of each glass were poured into the graduated measuring cup and the resulting water in milliliters was measured and recorded. The data below shows the resulting milliliters for each sample for each test cycle as well as the percentage of evaporation that occurred which was determined by subtracting the resulting value from the original 100 milliliters and dividing by 100 to result in a percentage. Evaporation Test #1 Sample Resulting milliliters Sample Percentage of water evaporation Hours 3 6 9 3 6 Heated water 70 42 5 Heated water 0.3 0.58 Room temperature water 99 98 97 Room temperature water 0.01 0.02 Cooled water 91 80 68 Cooled water 0.09 0.2 Evaporation Test #2 Hours 3 6 9 3 6 Heated water 73 48 10 Heated water 0.27 0.52 Room temperature water 98 97 96 Room temperature water 0.02 0.03 Cooled water 99 98 97 Cooled water 0.01 0.02 Evaporation Test #3 Hours 3 6 9 3 6 Heated water 78 48 11 Heated water 0.22 0.52 Room temperature water 99 98 97 Room temperature water 0.01 0.02 Cooled water 96 88 86 Cooled water 0.04 0.12 Results of experiment: The original purpose of this experiment was to compare the effect of temperature on the evaporation rate of water. The results for the heated sample were as hypothesized. The highest rate of evaporation occurred in the heated sample. Also as the amount of water source decreased from previous evaporations, the subsequent evaporations were larger. The room temperature sample had marginal evaporation as expected. The results of the cooled sample were somewhat surprising, especially in the first test. It was assumed that the rate of evaporation would have been slowed down due to the cooler temperature and it would take longer for the evaporation to occur since the water source would have to warm over time for the molecules to excite and turn into vapor and evaporate. In researching this, it was discovered that these results might have been caused by the perspiration effect on cold water. It was noticed that there was a great deal of perspiration on the outside of the glass when the measurements were taken. After the first test, in an attempt to control this perspiration factor, the thermos was wrapped in the cooling towel. This did have an effect of the readings but the cooled sample results were still inconsistent and not what was expected. The results of the 3 separate tests showed consistency in the rate of evaporation across the both the heated and room temperature sources. This satisfies my goal of having a controlled environment in which to perform the tests. Conclusion: The results of the experiment confirmed the hypothesis in terms of heat having the largest impact on the evaporation rate of water. The heated sample had the greatest rate of evaporation. The hypothesis was that the temperature of the water would affect evaporation rate most. The results indicate that this hypothesis should be accepted, because the heated water source had the greatest rate of evaporation. The experimental design was a key factor in the success of the scientific inquiry. By controlling the air humidity, the air speed, the room temperature, the type of water (tap), the amount of water, the location where the water was placed, the size of the containers used, the number of tests conducted, the type of the containers used, and the length of time the water had to evaporate variables, enabled a controlled environment and allowed the focus of the experiment to be on the variable being manipulated which was the resulting water amount in each glass after evaporation has occurred. If the experimental design was faulty and the controlled environment was not established, other variables may have impacted the results. Humidity, air rate and air speed are factors in the rate of evaporation. If they were not controlled, the results of the experiment would have most likely been inconsistent. This experiment is valid since the test environment was controlled and only one variable was impacted by the test. Having multiple uncontrolled variable can invalidate an experiment in most cases. The experimental design and execution steps listed above would allow anyone to execute this experiment. If the tests were to be re-executed, the perspiration effect of the cooled sample needs to be taken into account and included in the measurements. Re-execution of the experiment described above and resulting similar results validates the experiment.

The Quintessential Rebel :: essays research papers

The Quintessential Rebel In Allan Sillitoe’s The Loneliness of a Long Distance Runner, we are introduced to Smith, a man with his own standards, beliefs, values, and battles. As we are taken through the story of a period of his live, we come to understand what Smith really stands for. He is a diehard rebel that is destined to always stick to his beliefs, and is willing to sacrifice all in a battle against his greatest enemy and opressor, society. Throughout the book Smith gives us a chance to get to know him. He willingly shares his thoughts with the reader, and often times his thoughts develop as he is telling his story giving us an up-close look at the inner workings of Smith’s mind and personality. Smith belongs to a group of people he calls the Out-Laws. It is the underprivileged lower class poor street criminals. Crime runs in Smith’s family, and being born into poverty he nether sees, nor is even willing to contemplate a life without crime. At a point he hints on having some communist views, and perhaps suggests that his father had communist friends, if he wasn’t one himself. Fatally inflicted by cancer, Smith’s father died a painful death. We later find out that it was Smith who found his father breathless in a pool of his own blood, and to this day has a great deal of respect for him. The first time Smith’s family gets a taste of a financially comfortable life is when the factor y his father worked in gave them a lump of cash upon his father’s death. â€Å"†¦a wad of crisp blue-back fivers ain’t a sight of good† (Sillitoe, 20) says Smith as the one break his family got was only due to his father’s death. Smith is not money hungry, he steels simply to get by. He knows exactly where he stands in the world- in direct opposition of the In-laws, the â€Å"pig-faced snotty-nosed dukes and ladies"†(Sillitoe, 8). He realizes that he is a poor nobody, a petty criminal, an outcast of society. Smith by nature is a rebel. He puts himself and his fellow Out-laws in direct opposition of the rest; for him it’s â€Å"us versus them†. As we are getting to know Smith, he is spending his time in a Borstal after having been caught for a bakery robbery. He has no regrets about doing what he did in the bakery shop, and has a big enough heart to be happy for his accomplice, Mike for getting off.

College Gap Year Essay

Graduation is the time when young students become liberated from the daily grind and gain freedom to choose whatever they want to do with their lives. Some students decide to go directly to college, while some prefer to go to the workforce. A gap year, or a year off of school between high school and college, is another option for graduated students. In 2009, The Chicago Tribune published an article titled †Should Teens Take a Gap Year or go Straight to College?† by Cory Marchi claiming that a gap year is used to postpone a student’s future because they want to sightsee. He thinks that students won’t benefit from a year off of schooling, and doesn’t acknowledge the real world experience that can be gained from working or learning valuable life lessons during that time. A gap year after high school can help students determine what they want to pursue as their major, and what they desire out of their career. Marchi believes that because tuition is very expensive, increasing an average of eight percent or more annually, students should directly go to college in order to keep tuition costs down. However, if students aren’t sure what direction they want to take in life, they might benefit from year out of school to carefully consider their options. If they proceed with college before they know what they want, they may make a choice of major that they will regret later on, and they will then have to change their major, which could add another year’s tuition, exhausting limited college funds. During a gap year, students can take time to â€Å"soul search† and find what they really want out of their life. If the young graduates need another year to determine what career will make them the happiest in years to come, it is worth an eight percent penalty. During a gap year, students can find employment while determining their major and career. College is very expensive, and some students need an extra year of savings to put toward the cost of their education in order to keep their debt manageable. Although students may lose roughly eight percent in tuition from one year to the next, they would be able to save money to pay for that eight percent and the extra could be applied toward the rest of their tuition. Responsible students wouldn’t use a gap year as â€Å"a year of sightseeing,† like Marchi suggests, but instead would use it to help pay for their higher education. Marchi feels that students may not be motivated enough to continue with college after a gap year, but students who choose to take a gap year have the relaxation of a full year before they have to continue their education in college, and can recharge their batteries after twelve straight years of schooling. Students who are forced to attend college will get less out of their college education than those who work hard during their gap year. If a young adult doesn’t want to put in the effort toward their education, then they won’t be able to reap the rewards. If any student wants to attend college and is willing to put forth the effort, it will not make a difference if they take a gap year or if they don’t. Marchi also states that â€Å"delaying college can also delay the start of a career,† which may be true. However, a single year won’t be a handicap that can’t be overcome after graduation. The average job search lasts for about six months, and can take much longer. If students start their job search right after their graduation from college, they might have to wait until the next year to find a job. If gap year students start their search in the beginning of their senior year, and have a job lined up for after graduation, they could be only months behind the class they graduated high school with. They would also have a year of real-life experience in the work force to add to their resume that the non-gap year students wouldn’t have. Students can do whatever they want during their year off of school, but many get jobs and learn valuable life lessons that look good on a resume, helping them stand out in the crowd of applicants. A break from the daily grind of school can help students determine what career they want to pursue for four or more years of college. Cory Marchi believes that gap years do nothing for students other than hold them back, but gap years can help students find their ambitions, save money for tuition, and use their college years more effectively.

Substance Abuse in Modern Times Professor Ramos Blog

Substance Abuse in Modern Times Substance abuse is a huge problem today, yet, many people don’t know how big of a problem it is in the States. According to a study conducted in 2005, â€Å"22 million Americans had a problem or struggled with drugs and alcohol. 95 percent of these people were unaware they had a legitimate problem, and many were unsuccessful in finding help or assistance with this problem† (HealthyPeople.gov, 2020 Topics and Adjectives, par.1). Also as Psychology Today states, â€Å"Both substance use disorders and gambling behaviors have an increased likelihood of being accompanied by mental health conditions such as depression and anxiety or other pre-existing problems. Substance use and gambling disorders not only engage the same brain mechanisms of compulsivity, they respond to many of the same approaches to treatment† (Psychology Today, What is Addiction?). This is particularly true today where there are many cases of mental health being tied to substance abuse. Now, imagine a world where this problem was eliminated. Many families would be saved, lives wouldnt be in jeopardy, and there would be a new sense of cleanliness. Most of the human race obtain alcohol or drugs by purchasing these things at the local supermarket, pharmacy, or even the nearby corner store. However, since these two things are so readily available, it can be easy to get carried away with purchasing such goods. There’s really no way of tracking how much one has bought and consumed except at public bars. If a record system was implemented, there would be better control over these substances. A record system would be relatively easy to maintain and control. Once an American Citizen turns 21, he/she would automatically be enrolled into a system that tracks the amount of drugs or alcohol purchased by the individual. There would be different algorithms for each person, based on their background, in-house family members over 21, and financial stability. In simpler terms, if one was to purchase absurd amounts of alcohol in a short amount of time, a red flag would pop up on the persons record. This would cause a caretaker or someone of the sort to go check up on that individual. They would make sure they are okay and doing well. There would also be some slack for those who are medically prescribed a medication and need to order or purchase it consistently. This would prove beneficial because as time goes on, â€Å"eventually drug abuse can consume your life, stopping social and intellectual development. This only reinforces feelings of isolation† (Laurence Robinson, Melinda Smith and Jeanne Segal. Drug Abuse and Addiction. Par. 9). So basically when a person is going through any type of substance abuse, whether it be drugs or alcohol, or both, the desires and feelings of isolation can start to cultivate. This would cause people to start resisting help a lot more than usual. Thus, making resources for help useless. This record system would also help people see an actual visual representation of how much they are consuming. When many today buy alcohol, they arent aware how much they are actually putting into their bodies. However, with this new record. It would show them face to face how much they are buying and consuming as well. The other nice thing about this system would be that everything on the persons record or account, would be private. Only the person whom the account is tied to would be able to access all the information on the record. They wouldn’t have to feel guilty or nervous that other people would be viewing their activity. The only people that would be able to see it would be authorized professionals that only seek out to help those that raise a couple red flags. So there would really be no shame factor in this system. As was mentioned earlier, substance abuse is a very real problem that needs to be known. There are families, mental health, physical health, communities, and lives at stake every day with this tragic problem. Many try to turn to rehab and last there for years. Yet, that is often after the fact, when it’s too late. When people already realize there is a problem within them. So why not stop it sooner? This record system would open the eyes of many before problems arise. It would encourage people to think twice before purchasing drugs or alcohol. Don’t we all want a world free of addiction?  Ã‚   Laurence Robinson, Melinda Smith, Jeanne Segal. Drug Abuse and Addiction, June 2019. Help Guide HealthyPeople.org. 2020 Topics and Objectives, Substance abuse, 2014. Psychology Today, What is addiction?, 2019.

The eNotes Blog Toga! Toga! Toga! Its the Ides ofMarch!

Toga! Toga! Toga! Its the Ides ofMarch! In William Shakespeares Julius Caesar, a soothsayer warns the would-be king to Beware the Ides of March. Like the basis for many of Shakespeares plays, the impetus is not completely original. In this case, he adapted the line from Plutarchs much tamer rendering in The Life of Julius Caesar which advises Caesar to take heed of the day of the Ides of March. Shakespeare popularized the warning by adding a little punch to the original. Caesar would have done well to listen to the soothsayer, stay home, and catch up on some reading. After all,  the admonition wasnt the only portent of doom. His wife, Calphurnia, had dreamed that bad things were going to happen to him, and even offers to let him blame her for being unduly anxious as an excuse for him to stay home on that fated day. For a bit of background, the Ides of March involved a series of complicated formulas predicated on lunar activity and was used in the Julian calendar, a system which Caesar himself instituted. There are other ides but not all fall on the fifteenth. The Ides of January, for example, falls on the  thirteenth. Julius Caesar was indeed assassinated on the Ides of March in 44 B.C. by a gang of conspirators, including   Cassius and Brutus. (Et tu, Brute? a dying Caesar opines. In French, the familiar use of tu rather than vous here bespeaks the intimacy in which Caesar had held his supposed friend.) Assuming no one has had dreams of your demise and a straggly stranger hasnt whispered threats into your ear, you may want to celebrate the Ides. Here are some modern ways of doing so: Hop a plane to Rome and join the Hash House Harriers for their annual Toga Run. Pop open a craft house brew from Founders Brewing Company, who annually releases new beers on the Ides of March. Bate thy breath and sit upon thine hands and watch  the George Clooney movie The Ides of March. and, of course, TOGA TOGA TOGA!!!!!!!!!!!!!! (John Belushi in Animal House.)

Ethic Reflection Essay Example | Topics and Well Written Essays - 500 words - 1

Ethic Reflection - Essay Example do not directly contribute to the bottom line, they contribute towards social responsibility and develop relationships with the neighboring communities. Therefore, when organizations are confronted with hard decisions, they need to know that coming up with decisions will not only affect the employees and the corporation, but it has an impact on the stakeholders of the company and the public communities. Moreover, making the wrong or right decisions will affect many individuals, which is why ethics is so significant (Fassin, 2012). Stakeholders are those individuals that have a stake in the company. Stakeholders should be convinced that the resources spent on making the business a success are used well. It also assists the organizations to center on performance as passionate stakeholders still judge organizations primarily on their ability to deliver and the customer experience (Fassin, 2009). Ethics and social responsibility facilitates the organization to realize less wasteful and i nnovative methods to clarify to the stakeholders how good their business is and makes sure corporate citizenship and good business are practiced and understood all over the organization. This ensures that the stakeholders and other individuals involved in the organization to adjust to any changes in the company progressively and this prevents hostility and anger toward the organization (Elms, Brammer, Harris, & Phillips, 2010). My ethical perception has taken a complete new viewpoint throughout this program. I feel that my personal view of ethics is progressing, bearing in mind the information and knowledge I am gaining through this program and the personal experiences. At first, I used to love working on assignments on my own, and not asking for assistance since I feared something would not be done correctly. However, that has changed, and now I tend to work well with co-workers and I am patient. I discovered that I work well in groups, and my communication with co-workers is good.

Distance Zones (Sociology Class) Research Paper Example | Topics and Well Written Essays - 500 words

Distance Zones (Sociology Class) - Research Paper Example In his groundbreaking study, Prof. Hall introduced the four notations in his system, which are the public, social, personal and intimate distance (Weiten, Dunn & Hammer 247). The diagram as shown below illustrates his theory on how distance affects the way people will interact: This paper is a summary of several observations made in a crowded mall nearby and how many people fit into Halls distance zones during the course of the day, as shown below. The table comprises a total of one hundred observations made over the course of one hour: The largest group is composed of social distance which is not quite surprising if we consider that the mall is pretty much crowded during the time of the observation and it is also a weekend (Sunday mid-afternoon). People may have wanted more distance between them but inside a crowded mall, this is not entirely possible, especially with a special sale going on and there were many shoppers hunting for bargains. This partly explains why the public zone was smaller than anticipated because the mall is an enclosed space rather than an open mall like a country mall (strip mall) or town center. The third largest group is the intimate zone as lovers (adolescents, young singles, newly-married spouses and older couples) may have found a sale a good reason to bring their loved ones along and at the same time enjoy a little intimacy too. The personal zone comprised the smallest group and this more or less coincides with the rare occasion of a special sale for friends or colleagues to go out to gether. Many people have opted to go with their families or lovers, instead of going out with friends, many of whom they see a lot of times already on other occasions. The intimate distance group is not limited to lovers only but includes families going out together (parents and children) as well. As an aside, it is rare to have seen an older man and a younger woman