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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
Give a reason for the following:
An excess of carbon dioxide increases the temperature of the earth.
State the cause of increase of green house effect.
Fill in the blank:
________________are examples of greenhouse gases.
Name two more greenhouse gases.
Give the options for reducing green house gases by use of fuels better than fossil fuels.
A renewable source of energy which causes minimum or no pollution.
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.
Explain what role does the air in the room play in the loss of heat.
In the following statement, the underlined words are jumbled up. Write them in their correct form.
Carbon dioxide, thaneme, nitrous oxide and water vapour are known as heengrouse sesga.
