Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
Science Edition for Sixth Grade Science Volume 1
Third Grade Science Volume 2, Textbook Edition
Third Grade Science Volume 1, Textbook Edition
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Fourth-grade science volume 2 of the E-education edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 1
E-education edition sixth grade science volume 1
E-education edition fifth grade science volume 2
Fifth Grade Science Volume 2, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 1
Zhejiang Education Edition Seventh Grade Science Volume 2
Category | Format | Size |
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Science Edition for Sixth Grade Science Volume 1 | pptx | 6 MB |
Description
"Simple Machinery on Bicycles" Tools and Machinery PPT Download
Part One Content: Learning and Exploration
(1) Chains and gears on bicycles
The two gears refer to the pedal gear and the drive pinion.
The large gear on a bicycle has 44 teeth and the small gear has 18 teeth
The force of human pedaling is transmitted to the bicycle by the chain and gears. The chain meshes with the two gears and plays a transmission role to make the bicycle move.
The large gear of the bicycle pedal drives the smallest drive wheel gear, which rotates the fastest but uses the most force.
The large gear of the bicycle pedal drives the middle drive wheel gear, which has the slowest speed, but is more labor-saving.
The large gear of the bicycle pedal drives the largest driving wheel gear, which rotates the slowest but saves the most effort.
The function of the gear (axle) is to increase the speed
Simple machinery on bicycles PPT, part 2: expansion and extension
Among the 25 components of a bicycle, including the frame, tires, pedals, brakes, and chains, the basic components are indispensable. Among them, the frame is the skeleton of the bicycle, which bears the largest weight of people and cargo.
Bicycles can be used as an environmentally friendly means of transportation for transportation and travel; bicycles themselves are also a competitive sport, including road bicycle races, mountain bike races, track bicycle races, stunt bicycle races, etc.
Simple Machinery on Bicycle PPT, Part 3: Classroom Exercises
1. Fill in the blanks
1. The large gear drives the small gear, and the small gear rotates faster than the large gear ( ); the small gear drives the large gear, and the large gear rotates faster than the small gear ( ).
2. ( ) is the frame of the bicycle, which bears the greatest weight of people and cargo.
2. Choice
1. The handlebar of a bicycle is ( ) a simple machine.
A. Axle B. Lever
C. Incline D. Pulley
2. The bicycle is one of the most successful human-powered machines invented by mankind. It is composed of many ( ).
A.Simple machine B.Machine
C.Tool D.Device
Simple Machinery on Bicycle PPT, Part 4: Homework
Find information on how bicycles developed? And tell me what types of bicycles are there?
Keywords: Free download of Chinese PPT courseware for the first volume of the sixth grade in the textbook edition, PPT download of simple machinery on bicycles, PPT download of tools and machinery, .PPT format;
For more information about the PPT courseware "Tools and Machines Simple Machines on Bicycles", please click the Tools and Machines ppt Simple Machines on Bicycles ppt tag.
"Simple Machinery on Bicycles" Tools and Machinery PPT Teaching Courseware:
"Simple Machinery on Bicycles" Tools and Machinery PPT Teaching Courseware Part One: Introduction of New Courses Our country is a big country of bicycles, and bicycles are an important means of transportation. So what kind of working principle do bicycles use to advance? After studying this lesson...
"Simple Machinery on Bicycles" Tools and Machinery PPT:
"Simple Machinery on Bicycles" Tools and Machinery PPT Part One: Chains and Gears on Bicycles Bicycles rely on human power to move forward. How is the force of human pedaling transmitted to the wheels? The chain meshes with the two gears to transmit power and make the...
Download "The Function of Inclined Plane" Tools and Machinery PPT:
"The Function of Inclined Plane" Tools and Machinery PPT Download Part One: New Lesson Explanation (1) The Function of Inclined Plane A simple machine like a wooden board placed on a car compartment is called an inclined plane. Can beveled surfaces save effort? Notes: 1. What changes is the weight of the object,...
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Update Time: 2024-10-20
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