Question

• 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?
• 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?
• 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?
• If you were to cool these three hot things – dal, roti, rice – in which ways would you do so?
• Mini tried to cool her tea by blowing on it. Which do you think will be hotter – Mini’s tea or the air she blew from her mouth?

• Sonu was feeling very cold. He kept blowing on to his hands. Now think and write, which will be cooler – Sonu’s hands or his breath?

• For what other things do you blow air from your mouth?

Answer 1

• Disclaimer: This question has to be answered by a student based upon his own imagination. Keeping this in mind, the answer to the same has not been provided.

• Yes, the cloth became warm. This is because the air we exhale is warm.

• 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.

• We blow on some food to cool them or we leave them as it is uncovered to let them cool down in the surrounding atmosphere. We put some hot food in refrigerator also to cool them.

  Disclaimer: The first part of this question has to be answered by a student based upon his own experience. Considering this, the answer to the same has not been provided. The answer to the second part of the question is merely a sample. The students’ answers can vary from this. Also the answer of two students can vary from each other.

• Dal and rice can be cooled by keeping them at room temperature or by keeping them in refrigerators. Also, we can use a spoon to cool them. For cooling roti, we can tear it a little and leave it for a minute. In this manner the heat gets released into the atmosphere and then we can eat it.

• Mini’s tea will be hotter than the air coming out of her mouth. She is cooling down the hot tea from the cooler air coming from her mouth.

• Sonu’s hands will be cooler than his breath. He used the warmer air coming out of his mouth to warm his cold hands.

• Disclaimer: This question has to be answered by a student based upon his own knowledge and imagination. Considering the sustenance of this thinking process, the answer to the same has not been provided.