1.
Name three major sources of pollutants in the air. Also state the ill-effects of these air pollutants.
2.
What is the importance of ozone gas? Why is global warming a threat to life on the earth?
3.
How is rainfall caused? Explain it with the help of a diagram.
4.
Write the difference between weather and climate.
Answers
Answer:
1. Ozone. Particles. Sulfur dioxide. We live in modern and industrial area.
Some of the air pollutants are;
smoke from the factories.
smoke from the fuel vehicles.
dust from the construction sites.
fumes from the radioactive powerplants.
2. Ozone sits in the upper atmosphere and absorbs ultraviolet radiaton, another type of solar energy that's harmful to humans, animals and plants. CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.
3.When water on the Earth's surface is heated by the Sun, it evaporates and turns into water vapour which rises into the air. When the air cools it condenses around some dust or other particles in the air, called condensation nuclei. These small droplets then become visible as clouds.
4.Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. ... Weather tells you what to wear each day.
Explanation:
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