Describe how green house effect may cause atmospheric heating ? Name any two atmospheric constituents responsible for it.
Carbon dioxide molecules have the ability to absorb infra red radiations reflected from the earth. This trapping of infra red rays by the carbon dioxide molecules increases the temperature of the atmosphere. This is also known as green house effect.
Two gases that are responsible for causing green house effect are :
(i) Carbon dioxide
(ii) Methane
What are different types of combustion?
Draw a diagram to explain that air is essential for combustion.
Explain why, fire caused by electricity should not be extinguished by pouring water.
Explain various harmful effects of burning fuels.
