Revision Notes for CBSE Class 6 Science Chapter 15 Air Around Us - Free PDF Download
FAQs on Air Around Us Class 6 Notes CBSE Science Chapter 15 (Free PDF Download)
1. What is air made up of according to Class 6 Science Chapter 15 Air Around Us?
The majority of naturally occurring gases, or around 78% of air, are composed of nitrogen. The second most prevalent gas in the atmosphere is oxygen, which has a prevalence of about 21%. An inert gas called argon makes about 0.93% of the entire makeup. Carbon dioxide, neon, helium, methane, krypton, hydrogen, nitrous oxide, xenon, ozone, iodine, carbon monoxide, water vapours, and ammonia are all present in trace levels in the atmosphere.
2. How will you prove that air supports burning with reference to Chapter 15 of Class 6?
We can demonstrate that burning occurs in the air by performing the following experiment:
Put two candles on a table that are already burning. Now, place a glass tumbler on top of one candle to cover it.
You'll observe that although the other candle keeps burning, the candle covered by the inverted glass tumbler eventually goes out. The absence of air inside the glass tumbler is the reason for this. However, the air that was initially in the glass tumbler gets burned away. This demonstrates that burning occurs in the air. You can refer to other Air Around Us Notes on Vedantu for Class 6.
3. Does air have weight according to Class 6 Science Chapter 15 Air Around Us?
Since we are aware that air is a substance, it must be heavy. By weighing an inflated balloon and comparing its weight to the weight gained when it is not inflated, you may determine it. A balloon that has been inflated will weigh more than one that has not. We can refer to more questions related to air on Vedantu and their notes related to the same.
4. What are the 6 uses of air according to Class 6 Science Chapter 15 Air Around Us?
Natural resources like air are widely available. The first thing we can say when discussing the uses of air is that it is the most crucial component for maintaining the health and vigour of all life on earth. Having said that, the air is extremely beneficial and has many uses, much like water, including supporting life and growth, combustion, maintaining temperature, supplying energy, photosynthesis, etc.
5. Can we see air yes or no?
We have evolved retinas that are sensitive to the same wavelengths of light that flow through the air without being impeded; otherwise, we wouldn't be able to see anything at all. This is why air appears transparent to our eyes. Air is simply in motion, and pressure changes in the atmosphere are what generate wind.