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प्रश्न
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?
उत्तर
His mouth would have got burnt from the hot potatoes if he had eaten the potatoes without cooling them. The air coming out of his mouth is colder as compared to the hot potatoes. So, he used air from his mouth to cool down the hot potatoes.
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?
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?
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.
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?
Do you want to listen to your heartbeat? Take a rubber tube as long as the distance from your shoulder to your elbow. At one end of the tube fix a funnel. Place the funnel on the left side of your chest. Put the other end of the tube to your ear. Listen carefully. Did you hear a dhak dhak sound?
Stand with this snake below a fan. Look in which direction it moves. Take this paper snake to different places and observe its movement.
