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Investigating Water Quality in the St. Francis Xavier Stream

Organization(s):St. Francis Xavier Catholic School
Country:United States of America
Student(s):Molly Fleming, Sophia Willard, Gabe Woods
Grade Level:Middle School (grades 6-8, ages 11-14)
GLOBE Teacher:Amy Woods
Contributors:Mr. Todd Toth
Report Type(s):U.S. Student Research Symposia (SRS)
Protocols:Dissolved Oxygen, Water Transparency, Water Temperature
Language(s):
Date Submitted:05/30/2019
Presenting at the GLOBE Ne and Mid-Atlantic SRS
The research question states: How does dissolved oxygen (D.O.), transparency, and temperature relate in the St. Francis Xavier Stream? The hypothesis states that when the transparency levels are lower, the temperature will be higher because there are not as many particles to collect and scatter the light, therefore the water will be warmer because there is more light entering the water. Also, the D.O. levels will be lower because colder water dissolves more oxygen in the water, so if the water is warmer because of the transparency there will not be as much dissolved oxygen in the water. Water was collected from the stream on SFX property and tested either beside the stream or back in the classroom following GLOBE protocols. The data partially supports the hypothesis. Since D.O. is high and the temperature is low, it seems like the stream has good water quality, but more data will need to be taken and more variables will need to be measured. Keywords: water, dissolved oxygen, temperature, transparency


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