Experiment device for exploring work principle of submarine
A technology of working principle and experimental device, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve problems such as thinking obstacles, and achieve the effect of easy self-control, conducive to training, and remarkable effects
Inactive Publication Date: 2014-11-26
朱俊禅
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Problems solved by technology
[0004] In the current junior high school physics teaching about sinking and floating, many students in the class cannot understand that "the sinking and floating of an object depends on the magnitude of the gravity and buoyancy it receives", especially the working principle of the submarine is not easy to understand, resulting in thinking. The reason is the lack of an experimental device that can intuitively feel the change of gravity to explore the working principle of the submarine
Method used
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Embodiment Construction
[0016] Such as figure 1 As shown, the mouth of the bottle body 1 is equipped with a rubber plug 6, and a connecting pipe 5 is inserted into the rubber plug 6, and a vent pipe 4 is sleeved on the connecting pipe 5, and the vent pipe 4 is used to connect an external air gun. A counterweight bar 7 and colored floating objects 3 with a density lower than water are placed in the bottle body 1, and a row of drainage holes 8 is arranged below the bottle body 1 above the position where the counterweight bar 7 is placed. For judging the rise and fall of the water level more clearly, a water level mark 10 is set on the bottle body 1 .
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An experiment device for exploring the work principle of a submarine comprises a transparent bottle body provided with a rubber plug, the rubber plug being connected with a breather pipe. The experiment device is characterized in that the bottle body is internally provided with a balance weight bar; the bottle body is also internally provided with coloured floating bodies, the density of which is smaller than that of the water; the bottle body is provided with a plurality of water inlet / outlet holes at the place above the balance weight bar of the lower portion of the bottle body. The coloured floating bodies are balloon fragments or colored foam blocks. The bottle body is provided with watermarks. The beneficial effects are that through the rise and fall of the coloured floating bodies on the water in the bottle body, the change of water volume in the bottle body can be seen clearly, thereby visually sensing the total gravity change of the bottle body, clearing away thinking obstacles, understanding floating and sinking conditions of the objects, and truly understanding the work principle of the submarine; the experiment device has the advantages of being simple in structure, easy to made by oneself, and obvious in effect; and the experiment can be popularized as a home experiment for students, and cultivation of the manipulative ability of the students can be realized favorably.
Description
[0001] technical field [0002] The invention relates to a middle school physics teaching instrument, in particular to an experimental device for exploring the working principle of a submarine. [0003] Background technique [0004] In the current junior high school physics teaching about sinking and floating, many students in the class cannot understand that "the sinking and floating of an object depends on the magnitude of the gravity and buoyancy it receives", especially the working principle of the submarine is not easy to understand, resulting in thinking. The reason is that there is a lack of an experimental device to explore the working principle of the submarine that can intuitively feel the change of gravity. [0005] Contents of the invention [0006] The purpose of the invention is: in order to solve the above problems, propose a kind of experimental device that can intuitively feel the gravity change and explore the working principle of the submarine. [00...
Claims
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IPC IPC(8): G09B23/12
Inventor 朱俊禅
Owner 朱俊禅
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