"Thermal Expansion and Cold Contraction" Cold and Heat PPT Courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Thermal Expansion and C... | 6425次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Thermal Expansion and Cold Contraction" Cold and Heat PPT Courseware is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Thermal Expansion and Cold Contraction" Cold and Heat PPT Courseware, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Thermal Expansion and Cold Contraction" Cold and Heat PPT Courseware
Homemade "liquid thermometer"
When describing experimental phenomena, we need to make it clear what we saw before, during, and after the experiment, as well as what the experimental conditions were.
When a liquid is heated, its volume expands;
When cooled, the volume shrinks.
This is the thermal expansion and contraction properties of liquids.
The principles of commonly used thermometers:
It is made based on the principle of thermal expansion and contraction of liquids such as mercury, kerosene, and alcohol.
Does air also have the property of expanding with heat and contracting with cold?
Design an experiment to verify your conjecture!
1. When designing an experiment, what container should the air be placed in?
2. How can we see the expansion and contraction of air?
The composition of alcohol lamp flame
The outermost flame has the highest temperature and is called the outer flame.
The second layer of flame has a lower temperature and is called the inner flame.
The innermost flame has the lowest temperature and is called the flame core.
Use the outer flame of an alcohol lamp when heating objects.
Rules for using alcohol flame
First check the wick
Before using an alcohol lamp, check whether the wick is intact. If the top is uneven or burnt, it needs to be cut flat.
Second, add alcohol
When pouring alcohol into the lamp kettle, use a small funnel as a guide. It is absolutely forbidden to add alcohol to a burning alcohol lamp.
The amount of alcohol in the lamp kettle should not exceed 2/3 of the lamp kettle and should not be less than 1/4 of the lamp kettle.
Third, light the alcohol lamp
Only burning matches or wooden sticks are allowed to light alcohol lamps. It is prohibited to use a burning alcohol lamp to light another alcohol lamp. Because the overflowing alcohol from the side alcohol lamp can easily cause a fire when ignited.
Fourth: Extinguish the alcohol lamp and handle accidents
1. Extinguish the alcohol lamp
The fire must be covered with a lamp cap and cannot be blown with the mouth. After extinguishing, the lamp cap must be opened again and then buckled up so that the atmospheric pressure inside and outside the lamp cap is the same, making it easier to open the lamp next time (be sure to cover the lamp cap when not in use to prevent alcohol from evaporating).
2. Accident handling
If the alcohol lamp is knocked over and the alcohol spills and burns on the table, you should deal with it calmly and quickly cover it with a wet rag or sprinkle sand.
Keywords: cold and heat teaching courseware, thermal expansion and contraction teaching courseware, Hunan Education Edition third grade science PPT courseware download, third grade science slide courseware download, cold and heat PPT courseware download, thermal expansion and contraction PPT courseware download ,.PPT format;
For more information about the PPT courseware "Cold and Heat Thermal Expansion and Cold Contraction", please click the Cold and Heat ppt Thermal Expansion and Cold Contract ppt tag.
"Does Metal Expand and Contract with Heat?" Hot PPT download:
"Does Metal Expand and Contract with Heat?" Hot PPT Download Part One: Experimental Research Take a copper ball as an example to observe whether metal has the property of thermal expansion and contraction. Observe the thermal expansion and contraction of the copper ball. Experiment name: Does the copper ball expand and contract with heat? Experimental equipment: Alcohol lamp, copper ball thermal expansion and contraction...
"Does Metal Expand and Contract with Heat?" Hot PPT:
"Does Metal Expand and Contract with Heat?" Thermal PPT Part 1: Observe the thermal expansion and contraction of copper balls. Do experiments to observe the thermal expansion and contraction of copper balls. 1. Pay attention to the safety of using alcohol lamp; 2. Do not touch the copper ball. The heated copper ball will burn the skin. Describe the experimental process and what you saw...
"Thermal Expansion and Contraction of Air" thermal PPT download:
"Thermal Expansion and Contraction of Air" Hot PPT Download Part One: Exploring New Knowledge Observing whether the air expands and contracts with heat. Hypothesis: Air has the property of thermal expansion and contraction. If the volume of the air inside the bottle expands, the air inside the bottle will be squeezed out. Just find a way to observe inside the bottle...