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Direct linkDenny, Mark – European Journal of Physics, 2012
Trees transport water from roots to crown--a height that can exceed 100 m. The physics of tree hydraulics can be conveyed with simple fluid dynamics based upon the Hagen-Poiseuille equation and Murray's law. Here the conduit structure is modelled as conical pipes and as branching pipes. The force required to lift sap is generated mostly by…
Descriptors: Mechanics (Physics), Hydraulics, Science Instruction, College Science
Download full textBozdogan, Aykut Emre; Uzoglu, Mustafa – Online Submission, 2015
The aim of this study is to explore the problems encountered while teaching force and motion unit in 8th grade science and technology course from teachers' perspectives and offer solutions to eliminate these problems. The study was conducted with 248 science and technology teachers working in 7 regions in Turkey in 2012-2013 academic year.…
Descriptors: Teacher Attitudes, Grade 8, Science Teachers, Science Education
