"Energy Revolution" Energy and Sustainable Development PPT Courseware

Description

"Energy Revolution" Energy and Sustainable Development PPT Courseware

teaching objectives

1. Knowledge and skills

Common sense understands the changes that energy conversion technology has brought to mankind, and roughly knows the role of the three revolutions in social development.

A preliminary understanding that energy transfer and transformation are directional.

2. Process and methods

By collecting information, reading materials, and communicating with each other, we can determine the directionality of energy transfer and transformation and whether the statement of irreversibility is correct.

3. Emotional attitudes and values

By understanding the impact of science and related technologies on the development of human society, we have the awareness to serve science.

Navigation of this section

1. The ladder of human progress

2. Directionality of energy transfer and energy conversion

1. The ladder of human progress

Solar energy was the only energy source for ancient humans

Artificial fire—humanity’s earliest “technical revolution”

The invention of the steam engine—humankind enters industrialized society

2. Directionality of energy transfer and energy conversion

There are __________ in the transformation and transfer of energy. In the process of energy conversion and transfer, __________, so not all energy can be used. There are ___________ in the utilization of energy, and there are also _____.

Can you cite examples that illustrate that our lives and production are inseparable from energy?

With the growth of economy and population, my country's energy demand is also increasing. Total primary energy consumption increased from 602.75 million tons of standard coal in 1980 to 1.31557 billion tons of standard coal in 1996. Energy consumption is dominated by coal. Coal consumption increased from 610 million tons in 1980 to 1.388 billion tons in 1996, an increase of nearly 1.27 times.

1. Part of the internal energy released by the fuel in the car engine is converted into mechanical energy to drive the car, and the other part is transferred to the cylinder and other components in the form of heat or is lost in the air.

Possible ways to improve efficiency are: first, improving the fuel efficiency of gasoline; second, improving the engine to convert as much internal energy into mechanical energy as possible; third, collecting and utilizing the emitted heat; and fourth, reducing harmful friction of various components.

2. Start with specific examples around you, such as: the display screen is still in standby mode after the TV or computer is turned off; the water is still heating after it is boiled; etc.

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For more information about the PPT courseware "Energy and Sustainable Development Energy Revolution", please click the Energy and Sustainable Development ppt Energy Revolution ppt tag.

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Update Time: 2024-11-22

This template belongs to Physics courseware Lu Jiao Edition Ninth Grade Physics Volume 2 industry PPT template

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