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प्रश्न
Prepare a brief speech on global warming. You have to deliver the speech in your class.
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उत्तर
Global warming is an increase in the average temperature of the Earth’s surface. It occurs as a result of an increased concentration of greenhouse gases in the atmosphere. The greenhouse gases include carbon dioxide, methane, and water vapour. These gases trap solar radiations released back by the Earth. This helps in keeping our planet warm and thus, helps in human survival. However, an increase in the amount of greenhouse gases can lead to an increase in the Earth’s temperature leading to global warming.
संबंधित प्रश्न
Define 'Greenhouse effect'.
State the consequence of the greenhouse effect.
Give reason for the following:
In the absence of greenhouse gases, the surface temperature of the earth is maintained.
The diagram represents the greenhouse effect.
Which of the following – biofertilizers or nitrogenous fertilizers reduces the greenhouse gas – CO2? Explain.
How will you minimize heat loss due to the following:
Radiation
A red hot ball is suspended from the ceiling of a room using a thin metallic wire.
Suggest the way by which it loses the least amount of heat.
The greenhouse effect is boon or bane? Give your opinion.
Trees help in reducing the pollution of our environment. Lakhs of trees are planted by people in the month of July every year. The occasion is called
CO2, N2O, CH4, and CFC are known as ______.
Give two examples of Greenhouse gases.
