Science - Combined - 0653 CIE

Air Quality And Climate

Gbogbo ọrọ náà

The air looks empty, but it is a carefully balanced mixture, mostly nitrogen and oxygen with a little carbon dioxide and the noble gases. Burn fuels, run engines and farm animals, and that balance shifts: pollutants build up, the air over cities turns hazy, and the planet slowly warms.

In this lesson you will learn the composition of clean air, the source and harmful effect of each major air pollutant, and how greenhouse gases such as carbon dioxide and methane trap heat to cause global warming and climate change. You will be able to match each pollutant to where it comes from and the damage it does.

Ebumnobi

  1. [Core] State the composition of clean, dry air as approximately 78% nitrogen, N₂, 21% oxygen, O₂, and the remainder as a mixture of noble gases and carbon dioxide, CO₂
  2. [Core] State the source of each of these air pollutants, limited to: (a) carbon dioxide from the complete combustion of carbon-containing fuels (b) carbon monoxide and particulates from the incomplete combustion of carbon- containing fuels (c) methane from the decomposition of vegetation and waste gases from digestion in animals (d) oxides of nitrogen from car engines (e) sulfur dioxide from the combustion of fossil fuels which contain sulfur compounds

Akọmọ Ojú-ẹkọ

Air pollution and climate change are among the largest problems facing the world, and chemistry explains both. Knowing where each pollutant comes from and what harm it does is the first step in cleaning the air, and the greenhouse effect is one of the most examined ideas in the whole syllabus. These are facts you can use to argue about energy and the environment with real understanding.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
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Ọ dị na Android, Windows, macOS, na Linux

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Air Quality And Climate. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

  1. Approximately what percentage of clean, dry air is nitrogen? A. 21% B. 50% C. 78% D. 1% Answer: C
  2. Which pollutant is produced by the incomplete combustion of a carbon-containing fuel? A. Carbon dioxide B. Carbon monoxide C. Sulfur dioxide D. Nitrogen Answer: B
  3. Which gas is mainly responsible for acid rain from fossil fuels containing sulfur? A. Carbon dioxide B. Methane C. Sulfur dioxide D. Oxygen Answer: C
  4. Which pair of gases are greenhouse gases that cause global warming? A. Carbon dioxide and methane B. Nitrogen and oxygen C. Carbon monoxide and sulfur dioxide D. Argon and neon Answer: A
  5. What is the main source of oxides of nitrogen as air pollutants? A. Decay of vegetation B. Car engines C. Burning sulfur D. Photosynthesis Answer: B

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Air Quality And Climate? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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