"Where Does Energy Come From" Energy and Life PPT Courseware

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"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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"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: 2024-07-01

This template belongs to science courseware People's Education Press Sixth Grade Science Volume 2 industry PPT template

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