Q1. Fill in the blanks:
i. We cannot see air but we can it.
ii. The blanket of air surrounding the earth is known as .
iii. is essential for supporting life on the earth.
iv. Air occupies .
v. Winnowing is more effective in air.
Q2. True/False:
i. Air is found everywhere.
ii. Soil does not contain air.
iii. The moving air makes it possible for you to fly your kite.
iv. Carbon dioxide supports burning of a candle.
v. Birds, bats and insects can fly due to the presence of air.
Q3. Which is the major component of air?
Q4. What percentage of air is nitrogen?
Q5. Which gas is important for burning to occur?
Q6. What percentage of air is oxygen?
Q7. What is the name of the gas we breathe in?
Q8. What is the name of the gas we breathe out?
Q9. Which device is used to harness wind energy to generate electricity?
Q10. What makes firki to rotate?
Q11. What is wind?
Q12. What may even uproot trees and blow off the rooftops?
Q13. What are those tiny shining particles in the beam of sunlight?
Q14. What do you understand by atmosphere?
Q15. From where does oxygen come in the air?
Q16. Which component of air used by green plants to make their food?
Q17. Why air is called a mixture of gases?
Q18. Why pages of an open book begin fluttering when the fan is switched on?
Q19. What is air made up of?
Q20. How do we feel the presence of air?
You can access the solutions to this worksheet here.
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1. What is air made of? |
2. Why is air important for living organisms? |
3. How does air pollution affect health? |
4. What are the different layers of the atmosphere? |
5. How can we reduce air pollution? |
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