Science

Pollution of Air and Water

Question:

Describe the 'Greenhouse Effect in your own words.

Answer:

Greenhouse effect may lead to global warming, i.e., an overall increase in the average temperature of the Earth. Greenhouse effect is caused by greenhouse gases. Examples of greenhouse gases include carbon dioxide, methane, and water vapour. When solar radiations reach the Earth, some of these radiations are absorbed by earth and then released back to the atmosphere. Greenhouse gases present in the atmosphere trap these radiations and do not allow heat to leave. This helps in keeping our planet warm and thus, helps in human survival. However, an indiscriminate increase in the amount of greenhouse gases can lead to excessive increase in the Earth's temperature leading to global warming.
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Questions and Answers

Pollution of Air and Water

Q 1.

You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.
Answer

Q 2.

At an individual level, how can you help reduce air pollution?
Answer

Q 3.

What are the different ways in which water gets contaminated?
Answer

Q 4.

Explain the differences between pure air and polluted air.
Answer

Q 5.

Describe the 'Greenhouse Effect in your own words.
Answer

Q 6.

Explain circumstances leading to acid rain. How does acid rain affect us?
Answer

Q 7.

Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
Answer

Q 8.

Prepare a brief speech on global warming. You have to deliver the speech in your class.
Answer

Q 9.

Clear, transparent water is always fit for drinking. Comment.
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Q 10.

Describe the threat to the beauty of the Taj Mahal.

Answer