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प्रश्न
Can you understand from the movement of the snake - if the air is moving upwards or downwards?
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उत्तर
Yes, we can understand from the movement of the snake whether the air is moving upwards or downwards. If the paper snake moves in a clockwise direction then we can say that the air is moving upwards.
If the paper snake moves in an anticlockwise direction then we can say that the air is moving downwards.
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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.
- 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?
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?
Have you ever burnt your tongue when you ate or drank something that was too hot? How do you cool some food when it is too hot?
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?
Take a glass. Bring it near your mouth and blow hard on it. Do this two or three times. Does the glass look hazy?
We blow to cool hot things as well as to warm them. Give examples of each.
Stand with this snake below a fan. Look in which direction it moves. Take this paper snake to different places and observe its movement.
