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प्रश्न
Stand with this snake below a fan. Look in which direction it moves. Take this paper snake to different places and observe its movement.
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उत्तर
When the snake is kept below a fan, it moves in an anticlockwise direction. This happens because the air is moving in a downward direction.
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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?
Fold a piece of cloth 3-4 times. Now bring it close to your mouth and blow hard on it. Did the cloth become warm?
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?
Take a glass. Bring it near your mouth and blow hard on it. Do this two or three times. Does the glass look hazy?
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.
We blow to cool hot things as well as to warm them. Give examples of each.
