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प्रश्न
Picture 2 - Sonu was feeling very cold. He kept blowing onto his hands. Now think and write, which will be cooler – Sonu’s hands or his breath?
उत्तर
Sonu’s hand will be cooler. Since his hands are open to the air outside which makes it colder.
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संबंधित प्रश्न
Can you think of any other way in which you use the warmth from your breath?
Balishtiye saw that the woodcutter was trying to cool the hot potatoes by blowing on them. What would have happened if he had eaten the potatoes without cooling them?
Have you ever burnt your tongue when you ate or drank something that was too hot? How do you cool some food when it is too hot?
Have you seen someone blowing on their spectacles to wipe them clean? How does the air from the mouth help in cleaning the spectacles?
Put your hand on your chest. When you breathe in, does your chest come out or go in.
Count how many times in one minute do you breathe in and breathe out.
Jump 30 times. Did you feel breathless?
What was the difference in your count before and after jumping?
We blow to cool hot things as well as to warm them. Give examples of each.
Can you understand from the movement of the snake - if the air is moving upwards or downwards?
