CN201126669Y - Floating force demonstration teaching appliances - Google Patents
Floating force demonstration teaching appliances Download PDFInfo
- Publication number
- CN201126669Y CN201126669Y CNU2007200166553U CN200720016655U CN201126669Y CN 201126669 Y CN201126669 Y CN 201126669Y CN U2007200166553 U CNU2007200166553 U CN U2007200166553U CN 200720016655 U CN200720016655 U CN 200720016655U CN 201126669 Y CN201126669 Y CN 201126669Y
- Authority
- CN
- China
- Prior art keywords
- cup
- demonstration teaching
- teaching aid
- ball float
- buoyancy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A buoyancy demonstration teaching aid, comprising an outer cup, an inner cup, a ball float, the inner cup is formed into inversed funnel shape, of which upper end is opened with a plurality of draining grooves, the inner cup is placed into the outer cup, the inner cup is fixed with the outer cup via upper edge, the ball float is placed in bottom opening of the inner cup, in order to consequently compose the demonstration teaching aid. The outer cup is mounted with a handle. The utility model has advantages of simple structure, low costs, suitable for wide application.
Description
Technical field
The utility model relates to the physics teaching aid, particularly relates to buoyancy demonstration teaching aid.
Background technology
The generation reason of buoyancy is that object upper and lower surface pressure differential becomes teaching difficulty, in the past the no available teaching aid of teaching.In in junior physics buoyancy teaching, the bridge pier of korneforos is subjected to this problem of buoyancy, many students think that bridge pier is subjected to buoyancy of water certainly in water, the reason that produces this mistake is that how the student produces buoyancy and does not understand.Reason lacks audiovisual aids, and does not also have the relevant teaching aid of this respect now.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of understand buoyancy generation condition, the buoyancy demonstration teaching aid intuitively of imparting knowledge to students.
The technical scheme that adopts is:
Buoyancy demonstration teaching aid comprises outer cup, interior cup, ball float.Cup is made upper coarse and lower fine toroidal in described, and the upper end has a plurality of spilling water grooves, and interior cup is gone in the outer cup, and interior cup is fixing with outer cup by last eaves, and ball float is inserted on interior cup bottom mouth, constitutes buoyancy demonstration teaching aid.
Above-mentioned outer cup is provided with a glass handle.
The utlity model has simple in structure, handling ease, with low cost, the easy advantage of promoting.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an interior cup structure synoptic diagram of the present utility model.
Embodiment
Buoyancy demonstration teaching aid comprises outer cup 1, interior cup 2, ball float 3.Cup 2 is made upper coarse and lower fine toroidal in described, and the upper end has six spilling water grooves 4, and interior cup 2 is packed in the outer cup 1, interior cup 2 is fixing with outer glass 1 by last eaves, ball float 3 is inserted on interior cup 2 bottom nozzles 5, and its outer cup 1 is provided with a cup handle 6, constitutes buoyancy demonstration teaching aid.
During demonstration, pouring in the inside cup 2, ball float 3 only top have water, be subjected to water downward pressure effect and non-rising, but along with water level rises, and constantly from spilling water groove 4 overflows into outside in glass 1, ball float 3 below water levels rise and produce the power that ball float 3 is made progress and constantly increase ball float 3 come-ups.
Claims (2)
1, buoyancy demonstration teaching aid, comprise outer cup (1), interior cup (2), ball float (3), it is characterized in that described in the cup (2) make upper coarse and lower fine toroidal, the upper end has a plurality of spilling water grooves (4), interior cup (2) is packed in the outer cup (1), interior cup (2) is fixing with outer glass (1) by last eaves, and ball float (3) is inserted on interior cup (2) bottom nozzle (5).
2, buoyancy demonstration teaching aid according to claim 1 is characterized in that described outer cup (1) is provided with a cup handle (6), constitutes buoyancy demonstration teaching aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200166553U CN201126669Y (en) | 2007-12-10 | 2007-12-10 | Floating force demonstration teaching appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200166553U CN201126669Y (en) | 2007-12-10 | 2007-12-10 | Floating force demonstration teaching appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126669Y true CN201126669Y (en) | 2008-10-01 |
Family
ID=40000136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200166553U Expired - Fee Related CN201126669Y (en) | 2007-12-10 | 2007-12-10 | Floating force demonstration teaching appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126669Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331252A (en) * | 2017-07-07 | 2017-11-07 | 天津师范大学 | The overweight experiment teaching aid of object and experimental method and application under a kind of liquid environment |
-
2007
- 2007-12-10 CN CNU2007200166553U patent/CN201126669Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331252A (en) * | 2017-07-07 | 2017-11-07 | 天津师范大学 | The overweight experiment teaching aid of object and experimental method and application under a kind of liquid environment |
| CN107331252B (en) * | 2017-07-07 | 2023-11-10 | 天津师范大学 | Overweight experiment teaching aid for object in liquid environment, and experiment method and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |