Презентация по английскому языку на тему "Экология.Кислотные дожди" (7 класс)

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  acid rain
  What it is?
  

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  What is the acid rain?
  The term «acid rain» was introduced by the British researcher Robert Smith in 1872 year for the first time. In 1883 the Swedish scientist Svante Arrhenius introduced the terms: acid and base.
  

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  How to form acid rain?
  The main cause of acid rain in the atmosphere is the presence of sulfur dioxide and nitrogen oxide, which are converted to sulfuric and nitric acid as a result of chemical reactions. Sulfur dioxide and nitrogen oxide in the atmosphere occurs as a result of industrial emissions.
  

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  Natural sources of acid rain is a volcanic eruption.
  

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  Another natural source of acid rain are forest fires and wildfires.
  

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  This is the scheme.
  Oxygen
  Toxic fumes
  water vapor
  sulfuric acid
  acid rain
  acid snow
  acid water
  

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  Acid rain is harmful for all living things.
  

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  It kills,wipes out fish and plant species.
  

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  When acid rain flows through the soil, It poisons trees and plants.
  

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  Acid rain in Kiev.
  

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  Acid rain causes serious damage to important buildings and objects.
  

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  Governments try to reduce the air pollution that causes acid rain.
  

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  Industries use new technologies to help make factory smoke less harmful to the environment.
  

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  We should use car less or use solar power to heat our homes.
  

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  Спасибо за внимание!