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IB Group 4 Project

McClaughry Springs
by

Alejandro Fuentes

on 23 February 2013

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Transcript of IB Group 4 Project

Area Burned photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Introduction Water Chemistry For this part of the project, we did seven tests to test the quality of the water. With the chemical tests, we were testing for the presence and concentration of specific chemicals. The tests were: PH, Phosphate, Nitrate, Dissolved Oxygen, Temperature, Turbidity, and Total Dissolved Solids. Velocity We began the project with the velocity.
We threw leaves, twigs, and ping-pong balls into the river and watched them float down stream for a meter. While they were floating one person timed the object while another watched at what distance into the river the object was. Environmental For this part of the project, we were to cut down and burn the invasive species that are living in the forest. Some people were to cut down the Honeysuckle trees using loppers and hacksaws, while others dragged them, and put them into the fire to permanently kill the plant so it would not reproduce. This graph shows the velocities of different objects at different distances into the river. IB Group 4 Project Fabiola Cervantes
Monica Gonzalez
Alejandro Fuentes
Alexis Gutierrez Macroinvertebrate Monitoring We lowered a D-net into the river, making sure that it scraped the bottom of the river. We brought the net back up and placed it in a tank full of water in order to release the macroinvertebrates. We observed the macroinvertebrates in the tank, and recorded our findings. The IB Group 4 project is a collaborative project between kids from the physics and biology courses at Curie High School.
We went to McClaughry Springs where we conducted experiments that corresponded to the four aspects of science: Biology, Physics, Environmental Science, and Chemistry . For the biology aspect, we identify the macroinvertebrates in the river. In the physics section, we measured the velocity of the stream. We also cut down invasive species in the forest preserve which relates to the environmental science aspect of the project. We tested the quality of the water by performing tests. Results PH We filled two test tubes.
Inserted one of the tubes into the left side compartment of the comparator.
Added 6 drops of the PH Wide solution to the other test tube and swirl.
Placed the second test tube in the comparator.
We rotated the disk until both color of the two test tubes match. Recorded this number. Phosphate We inserted the Long Path Viewing Adapter into the color comparator. We filled a tube with the creek water, and placed it in the top left opening.
We filled the square mixing bottle to the 20-mL mark with the creek water and added one PhosVer® 3 phosphate reagent powder pillow to the bottle.
We mix it and waited eight minutes for full color development read the result in 10 minutes.
We filled another tube with the prepared water and place the second tube in the top right opening of the color comparator.
We held the comparator with the tube tops pointing to our light source, which was the sky. Look through the openings in the front of the comparator and rotated the color disc until the color matches in the two openings.
We divided by 50 the reading in the scale window to obtain the mg/L phosphate. Nitrate We filled up a test tube with the water in the creek and inserted the test tube into the left opening of the comparator.
We fill another tube with the creek water and added one NitraVer 5 nitrate reagent powder pillows to the second tube.
We capped and shook the tube for one minute and waited another minute. We insert it into the right opening
We held the comparator so that the light source was directly behind the tubes and rotated the color disc until the colors in the front windows matched.
We read the results in the scale window in mg/L nitrate nitrogen and record it. Dissolved Oxygen We filled the Bod bottle with sample water for 3minutes.
We inclined the bottle and placed a stopper making sure no air bubbles form and added one Dissolve oxygen Reagent 1 and 2 to the bottle and then place the stopper again but making sure no bubbles form.
We inverted the bottle until the Oxygen reagents dissolve and allowed this to settle down. We added Oxygen Reagent powder 3 to the bottle and invert it until it dissolves.
Added one tube of sample water to the bottle and added Sodium thiosulfate solution drops until it becomes color less, and counted the number of drops.
We used a prepared sample from when the Oxygen 3 Reagent was added, and added contents from the BOD bottle until 30ml are reached. Then, added Sodium thiosulfate solution drops until it became color less and multiplied the number of drops by .2 to get the data. Temperature Placed the thermometer into one section of the creek. Record that temperature.
Repeated step 1 but in a different section of the creek. Turbidity Conclusion We placed the tube in the water and we read the reading as we drained the tube with the drain hose and attached finger crimp. Total Dissolved Solids Turned device on. Press the “Hold Mode” to change the temperature coefficient since it will display in KCI if not changed
Placed the meter in the water for approximately 2 mins. Quickly press the “HoldMode” to record the display in the meter once removed from the water. Recorded this number and turn the device off. After conducting these experiments we learned the importance of being aware of the river's health and that we should all contribute to keep the river and forest clean and free of invasive species for the future generations to enjoy. Our understanding of the importance of the river was crystallized when we saw how the invasive species and macroinvertebrates in the river affected its quality and the habitat around it. Results During the trip, we managed to burn an area of 186 meters squared of the honeysuckle trees invading the forest in a span of three hours. Using Google Maps and the scale it provided, we calculated the area of the entire McClaughry Springs to be approximately 825,000 meters squared. Using this data, we divided the total area of the springs to the area we burned and multiplied it by three to give us the amount of hours it would take to get rid of all the honeysuckle trees in the forest. Then, we divided it by 24 to give us the amount of days, and next we divided it by 365 to give the amount of years. That calculation came out to be approximately 1.52 years which is about a year, 6 months, and 24 days to get rid of the entire forest with the invasive honeysuckle trees. Pretty brutal huh? This shows the discharge for every half meter of the stream. This graphs shows the group score and the water quality of the river. As you can see, macroinvertebrates have a great impact on the quality of the river. The water quality resulted to be 2.2, which categorizes the quality of the water as "Good". The results show that the water quality is poor. Since the overall Water Quality Score is 44.29. This graph shows the group score.
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