CBSE Class 5 Environmental Science Blow Hot Blow Cold - Download Free PDF
We blow on our hands when we feel very cold as it warms us up but we also blow on our hands when we get burnt as it provides relief from the hot and burning sensation. Isn’t that confusing and at the same time amazing? The chapter Blow Hot Blow Cold of EVS for Class 5 talks about this concept in an extremely interesting way with the story of a woodcutter and a short man named Mian Balishtiye.
On a winter evening in the forest, the woodcutter goes to get wood but his hands start getting numb due to the extreme cold. The woodcutter blows hard on his hands to make them warm. When Mian Balishtiye saw it, he went up to the woodcutter to ask why he was blowing on his hands. The woodcutter replied that by blowing on his hands he could keep them warm. Mian Balishtiye said, "ok," but lingered around to keep a close watch on the woodcutter.
When it was afternoon, the woodcutter was hungry and he made a chulha (stove) with stones and wood and started boiling potatoes in a bowl. Since the woods were damp, he had to blow on them to help them burn. Then the woodcutter takes out the potato from the bowl while it is too hot and starts blowing on it.
Mian Balishtiye gets surprised by this and again asks the woodcutter as to why he was blowing this time. When the woodcutter replies that he was trying to cool down the potatoes by blowing on them, Mian Balishtiye gets too scared and thinks that the woodcutter is a ghost as he can blow hot and blow cold with the same breath.
The main aim of this story is to make kids understand that that same process of blowing can produce heat as well as cool down things. The hot and cold worksheet also urges students to use their imagination to find out in what ways they can use their breath. The concept of which is hotter and which is colder is also taught through various pictorial examples. In this chapter, kids also learn how the flow of air can change the direction of movement of an object.
CBSE Class 5 EVS Worksheet Chapter 15 Blow Hot Blow Cold - PDF will be uploaded soon
FAQs on CBSE Class 5 EVS Worksheet Chapter 15 Blow Hot Blow Cold - PDF
1. What are some ways you can use the warmth of your breath?
We can use the warmth of our breath for purposes like treating redness of the eye from injury, cooling down a hot item, etc.
2. The woodcutter cooled the potatoes before eating them. What would have happened if he ate them without cooling?
If the woodcutter ate the potatoes without blowing and cooling them, he would have got burns in his mouth.
3. Which is the organ of respiration that helps us in breathing?
The lungs in our body help us in breathing.