"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human 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 |
|---|---|---|---|
| "Scientific Inquiry: Bal... | 3700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 "Scientific Inquiry: Balance Conditions of Lever" Machinery and Human 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
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human 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
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human PPT Courseware
Introduce new lessons
Through the study of buoyancy, students already know that Archimedes was a great scientist in ancient Greece. His main contributions to physics include two aspects: buoyancy problems and lever balance problems. Archimedes famously said: "Give me a fulcrum and I can move the earth."
Question: What is the basis for Archimedes to say this? Do you think this is possible?
The lever is an ancient and simple machine. The application of many machines has changed and enriched our lives. Today we will start with the levers in life and understand the relationship between machinery and people.
1. Understand leverage
Show the lever and describe its application and characteristics.
Discuss and summarize the common characteristics of various levers: a hard rod that can rotate around a fixed point under the action of force is called a lever in physics.
2. Understand several concepts of leverage
Introduce the fulcrum, power, power arm, resistance, and resistance arm.
3. Balance conditions of leverage
Design experimental plan: (Guide students to discuss. It is best to know the size of the force and moment arm in the experimental device at any time. Before the experimental investigation, students should be allowed to fully discuss their investigation plan.)
Experimental data (omitted)
Analysis and judgment (omitted)
Discussion and communication (omitted)
It is concluded that the balance condition of the lever is: power × power arm = resistance × resistance arm
1. The power arm is greater than the resistance arm (the power is less than the resistance), which is called a labor-saving lever.
For example: bottle opener, spike pick
2. The power arm is smaller than the resistance arm (power is greater than resistance), which is called the effort lever
For example: fishing rod
3. The power arm is equal to the resistance arm (power is equal to resistance), which is called an equal-arm lever
For example: balance
Keywords: Machine and Man teaching courseware, scientific inquiry balance conditions teaching courseware of levers, Shanghai Science Edition eighth grade physics PPT courseware download, eighth grade physics slide courseware download, Machine and Man PPT courseware download, scientific inquiry balance of levers Conditional PPT courseware download, .PPT format;
For more information about the PPT courseware "Machine and Human Science Exploring the Balance Conditions of Levers", please click the "Machines and Humans ppt Science Exploring the Balance Conditions of Levers ppt" tag.
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human PPT Courseware 4:
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Man PPT Courseware 4 Activity 1 Observe and experience: ① Clamp things with tweezers ② Cut paper with scissors ③ Use a ruler to pry the stationery box Take a look: the tools in the picture, think and discuss them Common Characteristics at Work Activity 2 Explore..
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human PPT Courseware 3:
"Scientific Inquiry: Balance Conditions of Levers" Machinery and Human PPT Courseware 3 What levers have in common: ① They are all hard rods. (Soft ones are not acceptable, straight or curved ones are acceptable) ② It is rotating during the working process, and there is one point that does not move during the rotation process. ③It is also subject to the action of two forces.
"Scientific Inquiry: Balance Conditions of Lever" Machinery and Human PPT Courseware 2:
"Scientific Inquiry: Balance Conditions of Levers" Machinery and Man PPT Courseware 2 Learning Objectives 1. Extract common characteristics by observing various levers in life and production labor, and understand the five elements of levers; 2. Be able to analyze the characteristics of levers according to certain standards. Features and effects of use...