NCERT Solution for Class 6 Science Chapter 15 - Air Around Us
NCERT Textbook Solutions are considered extremely helpful when preparing for your CBSE Class 6 Science exam. TopperLearning study resources infuse profound knowledge, and our Textbook Solutions compiled by our subject experts are no different. Here you will find all the answers to the NCERT textbook questions of Chapter 15 - Air Around Us.
All our solutions for Chapter 15 - Air Around Us are prepared considering the latest CBSE syllabus, and they are amended from time to time. Our free NCERT Textbook Solutions for CBSE Class 6 Science will strengthen your fundamentals in this chapter and can help you to score more marks in the examination. Refer to our Textbook Solutions any time, while doing your homework or while preparing for the exam.
NCERT Solution for Class 6 Science Chapter 15 - Air Around Us Page/Excercise 153
Air is a mixture of many gases. It consists of water vapour, oxygen, nitrogen, carbon dioxide, helium etc. It also contains dust particles and smoke.
Oxygen is essential for respiration.
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.
To show the presence of air in water, take some water in a pan and boil. Well before the boiling of water, if we look carefully at the inner surface of beaker, tiny air bubbles are visible on the inside of the beaker. These bubbles come from the air dissolved in water. This proves that water has dissolved air in it.
A cotton lump contains air in it. Infact, there are various spaces in the lump in which air is filled. When it is put into water, air present in these vacant spaces gets dissolved in water and the cotton lump sinks.
NCERT Solution for Class 6 Science Chapter 15 - Air Around Us Page/Excercise 154
The five activities possible due to air are:
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.
Plants and animals help each other in exchange of gases in the following manner:
i.Plants take in carbon dioxide and give out oxygen.
ii.Animals take in oxygen and give out carbon dioxide.
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