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https://doi.org/10.3938/NPSM.69.1271
Development of a Device for a Block-Type Bernoulli’s Principle Inquiry Experiment

Jin Ho PARK, Jong-Ho PARK*

Department of Science Education, Jinju National University of Education, Jinju 52673, Korea
Correspondence to: parkkdp@cue.ac.kr
Received October 5, 2019; Revised October 28, 2019; Accepted October 28, 2019.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
A Device for a block-type Bernoulli’s principle inquiry experiment was designed to verify the principle of Bernoulli visually by directly manipulating various variables. That device was basically constructed using three tubes with diameters of $\phi$25, $\phi$50, and $\phi$80 so that the surface area of the tube could be modified by the students. The three basic tubes can be constructed of various types of experimental devices by using three tubes consisting of I, L and T. The devices were designed in such a way that wind power and wind speed, could be controlled and phenomena related to them could be checked visually. When the experimental values for wind speed and pressure in two different parts of the tube were compared by means of the Bernoulli theorem and the continuous equation, the errors at the two points were found to be similar to within 10\%. In addition, the speed of the fluid was observed qualitatively through visual devices using ping pong balls, flying objects, and scents. Thus, students should be able to understand various phenomena by applying Bernoulli’s principle and experimenting with various types of experimental block-type devices.
PACS numbers: 01. 40. gf, 01.40.E$-$, 01. 40. gb
Keywords: Science education, Physics education, Bernoulli principle, Pressure

January 2020, 70 (1)