Do the CO$_2$ absorption by plants and emission by growing media obey Fick's law?
Authors: Nadhifa Zahira Ramadhani Mart, Terry Mart
Abstract
A simple homemade greenhouse was constructed as a part of the high school project during the learning-from-home period. The greenhouse was used to show CO$_2$ absorption by Sansevieria trifasciata during the night, obeying Fick's law, while the CO$_2$ emission by the medium used to grow the plant does not. Although other plants can be used for this purpose, the use of Sansevieria is interesting and offers certain advantages because it absorbs CO$_2$ during the night. The project could also provide a simple tool for high school students to investigate the absorption and emission of CO$_2$ from home or in laboratory. Extension of this project to investigate the effect of plant respiration on the environmental parameters, such as decreasing temperature and increasing humidity, is also possible.
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Abstract
Even if laboratory practice is essential for all scientific branches of knowledge, it is often neglected at High School, due to lack of time and/or resources. To establish a closer contact between school and experimental sciences, the University Sapienza of Roma and the Istituto Nazionale di Fisica Nucleare (INFN) launched the Lab2Go project, with the goal of spreading laboratory practice among students and teachers in high schools.
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Abstract
We describe a procedure in which elementary education students fabricate 3-cell, $\approx5 ~\mathrm{Watt}$, $1.6~\mathrm{V}$ solar panels. The panels are manufactured at a cost of about $\$6$ each. The paper also describes a series of characterization activities that we have had our students complete with the panels once fabrication is complete. Specifically, our students have determined: the dependence of panel power on load resistance, the variation of open-circuit panel voltage between different students' work, and energy capture efficiency. The activity also allows opportunities for discussion of manufacturing and process improvement which can provide unusual connections to engineering a…
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Diet Soda and Liquid NitrogenBart H. McGuyer, Justin M. Brown, Hoan B. Dang · 2021 · American Journal of Physics 77, 677 (2009) · AI summary available
Abstract
Letter to the Editor about how the diet soda and Mentos reaction can be produced by the direct immersion of a plastic soda bottle in liquid nitrogen.
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Abstract
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Abstract
Teachers' response to the real-time needs of diverse learners in the classroom is important for each learner's success. Teachers who give differentiated instruction (DI) provide pertinent support to each student and acknowledge their differences in learning style and pace. However, due to the already complex and intensive routines in classrooms, it is demanding and time-consuming for teachers to implement DI on-the-spot. This study aims to explore how to ease teachers' classroom differentiation by enabling effortless, low-threshold student-teacher communications through a peripheral interactive system. Namely, we present a six-week study, in which we iteratively co-designed and field-tested …
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Abstract
Despite the extensive body of research that supports scientific inquiry and argumentation as cornerstones of physics learning, these strategies continue to be virtually absent in most classrooms, especially those that involve students who are learning English as a second language. This study presents results from an investigation of 3rd grade students' discourse about how length and tension affect the sound produced by a string. These students came from a variety of language backgrounds, and all were learning English as a second language. Our results demonstrate varying levels, and uses, of experiential, imaginative, and mechanistic reasoning strategies. Using specific examples from students…
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Abstract
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Abstract
In this work we present some results from a survey aimed to assess the knowledge and views of the Greek undergraduate students (technology oriented) on some issues of radiations, nuclear energy and their consequences. Findings indicate that the, examined group, of Greek students have a series of misconceptions and faulty views on radiations and general nuclear issues. No significant differences in the students responses related to the type of secondary school they attended were found. Moreover, analysis according to gender, indicated that females are less informed than males in most of the examined issues
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