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News & Photos
Out of the Lab and into the Water
When asked what they liked best about the annual stream study, this year’s seventh graders replied, “Getting wet!” The students did get soaked, and it wasn’t just from wading in the stream. After weeks and weeks of a major drought, the skies opened up and it rained the entire morning of October 7, as students collected all sorts of information from the Gwynns Falls stream on McDonogh’s campus. “It rained so much that the water level rose 6 inches while we were at the stream!” exclaimed one student.
The stream study is the culmination of a science unit on the physical and chemical properties of water. Working in small groups, students measured water velocity by tossing a small float in the water and timing how long it took to go five meters. They took the average of several measurements and then divided the distance by the time in order to calculate the velocity. Students also gauged depths, widths, pH, and temperature.
Finally, the students collected bugs and identified them. “This is particularly useful data because some of the organisms are very sensitive to water quality,” explained science teacher Eileen Heady. Although the data journals got quite soggy from the rain, the seventh grade is happy to report that the sensitive bugs are thriving, and the Gwynns Falls is as clean as ever!
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When asked what they liked best about the annual stream study, this year’s seventh graders replied, “Getting wet!” The students did get soaked, and it wasn’t just from wading in the stream. After weeks and weeks of a major drought, the skies opened up and it rained the entire morning of October 7, as students collected all sorts of information from the Gwynns Falls stream on McDonogh’s campus. “It rained so much that the water level rose 6 inches while we were at the stream!” exclaimed one student.
The stream study is the culmination of a science unit on the physical and chemical properties of water. Working in small groups, students measured water velocity by tossing a small float in the water and timing how long it took to go five meters. They took the average of several measurements and then divided the distance by the time in order to calculate the velocity. Students also gauged depths, widths, pH, and temperature.
Finally, the students collected bugs and identified them. “This is particularly useful data because some of the organisms are very sensitive to water quality,” explained science teacher Eileen Heady. Although the data journals got quite soggy from the rain, the seventh grade is happy to report that the sensitive bugs are thriving, and the Gwynns Falls is as clean as ever!