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प्रश्न
Can you make a mirror hazy in the same way? Can you tell by touching the mirror what made it hazy? Is the air you blew from your mouth dry or wet?
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उत्तर
Yes, I can make the mirror hazy as well. When we blow the air, the moisture formed by the air blown comes in contact with the mirror which makes the mirror look hazy. The air blew from the mouth is wet.
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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?
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?
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?
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?
Make whistles of the things given below. Write in a sequence–from the loudest to the softest whistle.
– Wrapper of a toffee
– A leaf
– A balloon
– The cap of a pen
– Any other thing
Put your finger under your nose. Can you feel any air when you breathe out from your nose?
Jump 30 times. Did you feel breathless?
Now again count how many times in one minute you breathed in and out.
