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प्रश्न
We blow to cool hot things as well as to warm them. Give examples of each.
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?
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.
- Now put your hands at some distance from your mouth, and blow again. Does the air from your mouth feel warm? Why?
If you were to cool these three hot things – dal, roti, rice – in which ways would you do so?
Picture 1 - Mini tried to cool her tea by blowing on it. Which do you think will be hotter – Mini’s tea or the air she blew from her mouth?
Can you name some things which produce melodious or pleasing sounds when we blow into them?
Put your hand on your chest. When you breathe in, does your chest come out or go in.
Jump 30 times. Did you feel breathless?
Now again count how many times in one minute you breathed in and out.
What was the difference in your count before and after jumping?
Can you understand from the movement of the snake - if the air is moving upwards or downwards?
