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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?
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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
Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.
- Have you warmed your hands in winter by blowing on them when they are cold? How does it feel?
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 seen people playing different musical instruments like flute, dholak, been ...., guitar, mridang, etc. Can you recognize their sounds with your eyes closed? Find out more about these musical instruments. Collect their pictures too.
Take a glass. Bring it near your mouth and blow hard on it. Do this two or three times. Does the glass look hazy?
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?
Now again count how many times in one minute you breathed in and out.
Can you understand from the movement of the snake - if the air is moving upwards or downwards?
