Question

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?



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?



Put your hand on your chest. When you breathe in, does your chest come out or go in.



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?

Answer 1

Answer:

HEY MATE!

HERE'S THE ANSWER FOR Q-1

HOPE IT HELPS YOU MY FRIEND...............

Q-1:THE air coming from our mouth is dry as we can feel the heat. Through this we can make out that it is dry air that is coming from our mouth.

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