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Authoritative PPT Summary
"Carbon Dioxide in Nature" Combustion and Fuel PPT (Lesson 1), 12 pages in total.
new knowledge learning
Knowledge Points Carbon Dioxide Cycle
1. Production of carbon dioxide: respiration of humans, animals and plants, combustion of _______________, etc.
2. Consumption of carbon dioxide: __________ of green plants, dissolution of carbon dioxide by rivers, lakes and seas, etc.
3． The impact of increased carbon dioxide levels on the environment
The increase in carbon dioxide content in the atmosphere will lead to global climate warming, causing glaciers to melt, sea levels to rise, and the biosphere to be affected.
[Expand] There are different opinions on the issue of atmospheric greenhouse effect. For example, some scientists believe that a century-old increase of 0.3 to 0.6°C is normal climate change, and cannot prove that rising carbon dioxide levels are directly related to climate change. Despite this, it is an indisputable fact that the concentration of carbon dioxide in the atmosphere and global temperature are rising rapidly, and that the increase in greenhouse gases will cause global warming.
Interactive exploration
Research point The carbon dioxide cycle
[Question Research] Observe the picture above, please answer how carbon dioxide is cycled in nature?
[Thinking and Communication] ____________________________________________
[Inductive improvement] The respiration of animals and plants and the burning of fossil fuels can produce carbon dioxide and are the main sources of carbon dioxide in the air; the photosynthesis of green plants and the absorption of rivers, lakes, seas and minerals are the main sources of carbon dioxide consumption. way. Human research on reducing carbon dioxide content in the air has two directions: one is to reduce carbon dioxide emissions, and the other is to increase carbon dioxide consumption.
Class feedback
Knowledge point 3 Carbon dioxide cycle
3． There are oxygen cycle and carbon cycle in nature, among which the one that can convert carbon dioxide into oxygen is ()
A. Respiration of animals and plants B. water absorption
C． Photosynthesis of green plants D. combustion of coal and oil
Keywords: Free download of Chemistry PPT courseware for the first volume of the ninth grade of the Lujiao Education Edition, PPT download of carbon dioxide in nature, PPT download of combustion and fuel, .PPT format;
For more information about "Combustion and Fuel Carbon Dioxide in Nature" PPT courseware, please click on the Combustion and Fuel PPT Carbon Dioxide in Nature PPT tag.
"Carbon Dioxide in Nature" Combustion and Fuel PPT:
"Carbon Dioxide in Nature" Combustion and Fuel PPT, 27 pages in total. Learning objectives 1. Understand the impact of CO2 cycle and content changes in nature on the environment, and understand the importance of protecting the balance of nature and the harmonious coexistence between man and nature; 2. Preliminary learning to prepare C in the laboratory..
"Carbon Dioxide in Nature" Combustion and Fuel PPT Courseware (Lesson 2):
"Carbon Dioxide in Nature" Combustion and Fuel PPT Courseware (Lesson 2), 18 pages in total. 1. Introduction of new lessons Carbon dioxide is a common gas. In the laboratory, we usually use _________ and _________ to prepare...
"Carbon Dioxide in Nature" Combustion and Fuel PPT Courseware (Lesson 1):
"Carbon Dioxide in Nature" Combustion and Fuel PPT Courseware (Lesson 1), 10 pages in total. 1. Introduction of new lessons Fossil fuels, as a kind of high-quality energy, have played a huge role in the development history of human civilization. It can be said that without fossil fuels, modernization would not be possible.