"Conversion and Conservation of Energy" PPT

Description

"Conversion and Conservation of Energy" PPT

Part One Content: Learning Objectives:

1. Know that various forms of energy can be converted into each other.

2. Know that during the conversion process, the total amount of energy remains unchanged.

3. List examples of energy conservation in daily life.

4. Awareness of analyzing physical phenomena from the perspective of energy conservation.

Conversion and conservation of energy PPT, Part 2: Mutual conversion of energy

Various forms of energy in nature

Electrical energy Mechanical energy Mechanical energy Light energy Chemical energy

Question: Can various forms of energy be converted into each other?

Energy can be transferred from one object to another

①Instances of mechanical energy transfer from one object to another

The collision of two small balls gives the stationary ball an initial velocity.

②Instances of transferring electrical energy from one object to another

The generator generates electricity to make the light shine

③Instances of transfer of internal energy from one object to another

Keep warm by the stove

Summary: Under certain conditions, various forms of energy can be converted and transferred to each other.

Conversion and conservation of energy PPT, part 3: Law of conservation of energy

Energy can neither be destroyed nor created,

It only transforms from one form into other forms,

or transfer from one object to another,

During the process of conversion and transfer, the total amount of energy remains unchanged.

Unachievable "perpetual motion machine"

1. "Perpetual motion machine": A machine that does not consume any energy or fuel, but continuously performs work on the outside.

2. According to the law of conservation of energy: it cannot be realized.

3. The task of engineering technology is to try to find ways to rationally utilize energy and reduce unnecessary energy loss during machine operation, rather than to develop a "perpetual motion machine" that can never be realized.

Energy transformation and conservation PPT, part 4 content: Class summary:

Energy conservation law:

Energy can neither be destroyed nor created,

It only transforms from one form into other forms,

or transfer from one object to another,

During the process of conversion and transfer, the total amount of energy remains unchanged.

Keywords: Zhejiang Education Edition ninth grade science PPT courseware free download, energy conversion and conservation PPT download, .PPT format;

For more information about the "Conversion and Conservation of Energy" PPT courseware, please click on the "Conversion and Conservation of Energy" PPT tab.

"Conversion and Conservation of Energy" PPT courseware:

"Conversion and Conservation of Energy" PPT courseware Part One: Conversion of Energy Various forms of energy in nature Electrical energy Mechanical energy Internal energy Light energy Chemical energy Question: Can various forms of energy be converted into each other? Various forms of energy can be converted into each other...

"Conversion and Conservation of Energy" Energy, Materials and Society PPT Courseware 3:

"Conversion and Conservation of Energy" Energy, Materials and Society PPT Courseware 3 Situation Introduction Can you tell what form of energy the following objects have? 1. Transformation of energy Think about it and do it 1. Rub your hands quickly back and forth. 2. Rub the pen holder into your hair or sweater..

"Conversion and Conservation of Energy" Energy, Materials and Society PPT Courseware 2:

"Conversion and Conservation of Energy" Energy, Materials and Society PPT Courseware 2 1. Various forms of energy 1. Expressions of energy 2. Energy categories in nature Mechanical energy, electromagnetic energy, internal energy, chemical energy, nuclear energy, etc. ① Chemical energy : When a chemical reaction occurs, due to the substance...

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Update Time: 2024-10-02

This template belongs to science courseware Zhejiang Education Edition Ninth Grade Science Volume 1 industry PPT template

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