Primary Purpose Of Experiment 22

Overall the objective of this lab exercise was to introduce students to watershed ecology and the ecological factors that affect water quality. Students used biotic (macroinvertebrates ) and abiotic indicators to asses the quality of water in a freshwater body. Specifically students collected water chemistry data (hardness, nitrate/phosphate concentrations, dissolved O2 and pH) to asses the quality of water. Additionally macroinvertebrates from the benthic environment of a respective field site were collected, analyzed as well as catalogued. Collectively the results indicated that a greater species diversity was indicative of greater water quality(Lenat). Likewise within a freshwater ecosystems a negative correlation was found to exist between fluctuating abiotic factors,species diversity and water quality. It can be concluded that amongst the three field sites the ranking of water quality from highest to lowest is as follows; Great Brook Farm, Russell Mill pond, Lawrence Street Stream.

In this experiment water quality and contamination of groundwater were investigated. First, I will observe the effects that many pollutants have on groundwater. I predict that in this experiment the oil and vinegar will create the largest quality of contamination to the water, while the laundry detergent will just create a bad smell to it. Considering the smells and thickness to these ingredients I think that it will cause the water quality to have a bad smell and cause the water to be very cloudy. Once filtering the contaminated water, the water will be clear and purified. Second, I

Most importantly, I learned how to use the YSI 9300 Photometer and HI 93703. They were pretty easy to figure out except that I had to put a control sample into the machine first. So, for the YSI 9300 Photometer the original water sample must be put in before the one with all the tablets dissolved. Also for the HI 93703, a test tube of distilled water would be put in before the water samples. I also forgot to put a turbidity spot on my data sheet so I am going to have to revise the data sheet again. Lastly I need to figure out what all of these chemical aspects mean concerning stream health. This means I am going to do a lot of research moving forward. I am planning on reading a lot of research papers by other scientists and looking on reliable environmental science websites. After today, I learned what to expect next time I do chemical

What effect did each of the contaminants have on the water in the experiment? Which contaminant seemed to have the most potent effect on the water?

The primary purpose of water testing is to analyze your well water for contaminants. Bob's Pumps runs down four of the most common sources of concern so you can stay informed about the possible risks,

Water was collected using a Wan Dorn Bottle (Lab Manual). There were approximately 20 students that collected samples from the deepest part of the lake, and 20 students that collected samples from the shallowest part of the lake. The shallower portion of the lake was closest to a golf course and floating vegetation (Lab Manual). Five water collections were made at each location. From the deep part of the lake, each of the five samples was taken at 1m; from the shallower part of the lake, each of the five samples was taken at a 0.5m depth (Lab Manual). These water samples were collected into 5 separate bottles, each labeled one through five. Bottle one had water nearest the surface, whereas bottle five had water collected deeper in the lake. Bottles two through four were intermediate levels of one and five. We used the water in the bottles labeled 1, 2, 3, 4, and 5, to detect the temperature and test the pH of the water samples from the various depths of both locations. Water from the labeled bottles 1, 3, and 5 were put into bottles labeled N1, N3, and N5, and were brought back to the lab to analyze their nutrient content (Lab

quality is important for a number of reasons. Firstly so that trends in the water quality can be

This experiment uses the pH scale to determine the purity of the water.The pH scale measures acidity and alkalinity or base. Acidity is the level of acid in a substance and alkalinity is a measure of the capacity of solution to neutralize an acid. The pH scale goes from 0 to 14. A reading of 0 to 6 is an acid reading and a reading of 8 to 14 is an alkaline reading. For one of the acidity tests the students had to get a rock from the creek and pour acid on it. If the rock bubbles and makes a sizzling sound, then it neutralizes acid. Neutralizing means rendering something ineffective or harmless by applying an opposite force or effect. In this case, the acid is neutralizing the alkaline on the rock. Limestone neutralizes acid and sandstone doesn’t. The show that the creek has a neutral pH of 7 and 69.1% of the rocks collected neutralize acid. Another test was an alkalinity test which shows that the creek has about 13 ppm. This means that the majority of the rocks neutralize acid rain, keeping the water

that was collected, and how it might be analyzed to better understand the water quality and ecosystem

The experimenters at Yale university took 40 males and constructed an experiment to reveal how obedient one could be to authority figures. The concluding results were shocking. The subjects who participated were more likely to hurt another individual to the full capacity because a person of authority directed them to. A whopping 26 out 40 subjects continued to the maximum punishment while only 14 were disobedient. This study took a range of male individuals from different age groups and education levels. The 40 subjects were informed that it was a study to find out how much one should be punished for them to learn. The subjects were as they perceived randomly assigned to be the teacher and the accomplish

At Tingalpa creek a number of chemical tests were performed in order to collect data about the health of the waterway. Water temprature,oxygen concentration, PH level, Nitrates/nitrites, phosphorus, salinity and E.coli were tested.

The distilled used in this experiment was slightly acidic with a pH of 5.27 when water should have been around a pH of 7. This could have been because carbon dioxide in the air may have been absorbed into the distilled water.

Summary: The article was mainly about the effects priming can have on an individual. The article thoroughly explains how thinking about a behavior, primes a person to engage in the same behavior they were just thinking about. The author describes this as an automatic effect, claiming we conduct certain behaviors unintentionally, using experiments to convey that behavior and attitude are automatic. The example used in the article to back up the author’s claim is stereotyping. The author believes individuals naturally stereotype, which ultimately has an effect on their behavior.

Aim: To investigate the effectiveness of a natural water filter on the pH of different liquids.

There are not a lot of connections that can be made of water quality in the US. The water testing done in the lab does not represent the water quality of the whole US. However, it is important to understand the contaminants in the water. Water contaminants are not visible and can cause a long list of health risks. Water quality is important everywhere. Most importantly, the water being tested was only in seven sites located in the Bay Area. Water quality monitoring is extremely important because everyone in America needs water to survive. Water contamination can result in hundreds of diseases or deaths in the given area. Water monitoring is done in water treatment centers.