NCERT Solutions for Class 6 Science Chapter 15 - Air Around Us
Chapter 15 - Air Around Us Exercise 153
To prove that air (oxygen) supports burning, we would be requiring the following things:
Two shallow beakers, two candles and two glasses of unequal size.
i. Take two shallow beakers.
ii. Fix burning candles in each and label them as A and B.
iii. Fill both the beakers with a small amount of water.
iv. Cover Candle A with small glass and candle B with long glass.
Candle A will blow out first in comparison to candle B because the content of air in small glass was less in comparison to long glass. Also water level will rise in both the glasses.
This proves that air (oxygen) is necessary for burning.
Chapter 15 - Air Around Us Exercise 154
i.The wind makes windmill rotate which is used to produce electricity.
ii.Birds, insects and bats fly due to the presence of air.
iii.Air helps in dispersal of seeds and pollen grains of several plants.
iv.Air plays an important role in water cycle.
v.We need air (oxygen) to breathe.
i.Plants take in carbon dioxide and give out oxygen.
ii.Animals take in oxygen and give out carbon dioxide.
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