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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
Which one of the following is a Greenhouse gas?
Give a reason for the following:
An excess of carbon dioxide increases the temperature of the earth.
The green house gas is :
The diagram represents the greenhouse effect.
Which of the following – biofertilizers or nitrogenous fertilizers reduces the greenhouse gas – CO2? Explain.
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.
Name two gases that are mainly responsible for acid rain.
Assertion: Greenhouse gases maintain the temperature.
Reason: Greenhouse gases absorb infrared rays.
Answer:
Which of the following is an example of a green house gas?
