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प्रश्न
We blow to cool hot things as well as to warm them. Give examples of each.
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उत्तर
Example, when we blow to cool hot things:
- A cup of tea
- any hot food etc.
Example when we blow to warm a cold thing. Our hands in the winters.
APPEARS IN
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.
- Blowhard from your mouth onto your hands. How did you find the air from your mouth as compared to the air around you? Was it hotter, or cooler?
Can you think of any other way in which you use the warmth from your breath?
If you were to cool these three hot things – dal, roti, rice – in which ways would you do so?
For what other things do you blow air from your mouth?
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.
Put your finger under your nose. Can you feel any air when you breathe out from your nose?
What was the difference in your count before and after jumping?
While playing, Amit hit a wall. His forehead was swollen. Didi immediately folded a scarf (4-5 times), blew on it, and kept it on Amit's forehead. Why do you think didi did this?
Measure your chest
– Take a deep breath in
– Ask your friend to measure your chest with a thread. Measurement ____________
– Now breathe out. Again ask your friend to measure your chest. Measurement ____________
– Was there any difference in the two measurements of your chest?
