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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
Can you think of any other way in which you use the warmth from your breath?
For what other things do you blow air from your mouth?
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?
Have you seen someone blowing on their spectacles to wipe them clean? How does the air from the mouth help in cleaning the spectacles?
Put your hand on your chest. When you breathe in, does your chest come out or go in.
Put your finger under your nose. Can you feel any air when you breathe out from your nose?
We blow to cool hot things as well as to warm them. Give examples of each.
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?
Can you understand from the movement of the snake - if the air is moving upwards or downwards?
