6th Science NCERT Chapter 15
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Important Topics to Study:
1. Is Air Present Everywhere Around Us?
– Air is present everywhere around us, fills space (shown with an experiment using an empty bottle), and is transparent. Earth is surrounded by a thin layer of air called the atmosphere.
2. What is Air Made Up Of?
– Air is a mixture of many gases including water vapor (important for the water cycle), oxygen (supports burning), nitrogen (major part of air, doesn't support burning), carbon dioxide (small component, produced by burning), dust, and smoke (produced by burning fuel and harmful).
3. Activity on Observing Air Dissolved in Water:
– Demonstrating the presence of air dissolved in water by observing tiny bubbles when heating water in a container.
4. How Organisms Obtain Air for Respiration:
– Exploration of how organisms in water and soil obtain the air they need for respiration, shown with an experiment involving dry soil in a beaker or glass.
These topics cover the presence, composition, and properties of air, including its role in natural processes and the importance of its components like oxygen for various activities and life processes.
What is the activity described in the chapter where an inverted glass tumbler is used to cover a candle?
Name the gases mentioned in the chapter that are major components of air and their respective roles in burning.
Explain how an experiment with an empty bottle demonstrates that air occupies space.
What is the significance of the presence of dust particles in the air as explained in the chapter?
Describe an activity from the chapter that involves observing bubbles coming out of soil when water is added.
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