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 2
Fifth Grade Science Volume 2, Textbook Edition
E-education edition fifth grade science volume 1
Qingdao Edition Fifth Grade Science Volume 2
E-education edition sixth grade science volume 1
Hunan Education Edition Fifth Grade Science Volume 2
Category | Format | Size |
---|---|---|
People's Education Press Sixth Grade Science Volume 2 | pptx | 6 MB |
Description
"Where Does Energy Come From" Energy and Life PPT Courseware
What do people use to cook, heat, run their cars, and make their appliances work?
Firewood, gas, coal, natural gas, petroleum, electricity, etc.
What role did they play?
provide energy
You know what else provides energy?
The water in the river, the sun, the flowing air...
What will our lives be like if one day there is no energy?
Turn off all the lights, unplug all appliances and experience it!
Energy is very closely related to us, and it affects our lives all the time.
Since energy is so important, it is necessary for us to enter the world of energy today and understand some knowledge about energy.
Classification of energy:
Classified by attributes:
(1) Renewable energy (which can be continuously replenished for use) such as: solar energy, geothermal energy, water energy, wind energy, bioenergy, and ocean energy.
(2) Non-renewable energy (it takes a long geological time to form and cannot be regenerated in the short term, such as coal, oil, and natural gas.
Classified by development and utilization status:
(1) Conventional energy (energy that has been produced on a large scale and widely used under existing economic and technical conditions) such as: coal, oil, natural gas, hydropower, and bioenergy.
(2) New energy (referring to renewable energy developed using new technologies) such as: geothermal energy, ocean energy, solar energy, biomass energy, hydrogen energy, wind energy, etc.
The impact of coal mining on our lives and the environment:
Causes surface subsidence, mining waste gangue, discharged waste water pollutes water resources, waste gas pollutes the air, dust affects plant growth, and noise in the production process has a serious impact on the ground environment.
According to the picture above, analyze where the energy for train operation comes from?
The energy of train operation〈——Petroleum〈——Plants<——Sun
The energy of train operation〈——electricity〈——wind;
The energy used to run the train〈——electricity〈——water;
The energy that the train runs on〈——electricity〈——oil〈——plants〈——sun;
The energy that trains run on <—electricity <—coal <—plants <—the sun.
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For more information about the PPT courseware "Energy and Life Where Energy Comes from", please click on the Energy and Life PPT Where Energy Comes from PPT tab.
"Where Does Energy Come From" Energy and Life PPT Courseware 2:
"Where Does Energy Come From" Energy and Life PPT Courseware 2 Where does energy come from? Plant photosynthesis. The energy in photosynthesis is solar energy, so the energy consumed by all living things is ultimately solar energy. 1. Explore the respiration of plants and ask questions: Plants of..
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Update Time: 2024-10-03
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