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CBSE Class 5 EVS Worksheet Chapter 15 Blow Hot Blow Cold - PDF

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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

Last updated date: 28th Sep 2023
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Importance of Blow Hot Blow Cold Class 5 EVS Worksheet

This chapter introduces novel ideas to kids, which are extremely useful in our everyday lives. 

  • The difference between warm, cold, hot, and freezing become clear to children through examples and explanations in this chapter.

  • Through practical examples, kids understand how an object turns clockwise or anti-clockwise based on the flow direction of air.

  • They also learn that in emergency situations like getting hit on the head, a cold or hot compress helps in bringing down the swelling. This can prepare them to take necessary action if such a situation arises.

  • Through the concept of breathing, kids also learn how their breath rate goes up and down before and after a strenuous activity like jumping.

Examples of Blow Hot Blow Cold Class 5 EVS Worksheet

Blowing has many purposes, and the examples in this chapter show students to explore all the different ways blowing is used in our lives.

  • Why do you blow air for the following activities?

    • Playing flute

    • Blowing birthday candles

    • Blowing on cold hands

    • Blowing on a toy that rotates

  • Draw the instrument that doctors use to hear the heartbeat.

  • Measure the chest of three children when they breathe in and breathe out and find out the difference.

  • A number of pictures of instruments are provided (trumpet, flute, violin, guitar, drum, saxophone,) and kids have to choose and colour those instruments which make a sound when we blow into them.

  • Blow hot blow cold MCQ questions:

    • We feel warm when we put on a blanket because:

      • The blanket is warm.

      • The blanket does not let air enter.

      • Our body is warm.

      • None of the above.

Interesting Facts About Blowing Air

  • If air is blown through a small opening in a fast manner, the air that comes out is cold.

  • If air is blown through a large opening in a slow manner, the air that comes out is hot.

  • If we place our hands close to our mouth, we feel hot air but if we move them away, the air feels colder.

  • The air coming out of our mouths does not differ in temperature, but it is the air in our surroundings that causes hot and cold phenomena. 

  • The air in our atmosphere is always cooler than the air from our lungs.

Important Topics of Blow Hot Blow Cold Chapter

  • Understand the concept of blow hot blow cold through a story and various practical experiments.

  • Perform some experiments to find out how our breathing changes after an exercise.

  • Make a stethoscope of a rubber tube and listen to your heart rate.

  • Make whistles out of different objects like a toffee wrapper, cap of a pen, balloon, etc. and find out which one makes the loudest sound when you blow in it.

Get Your Free Copy of Hot and Cold Worksheet PDF Now

  • The concept of hot and cold through blowing is explained in an interesting manner so that kids understand as well as play around with this concept in many ways.

  • The blow hot blow cold Class 5 EVS worksheet Pdf is available to download for free so that you can keep it on your device and access it from anywhere anytime.

  • The Pdf is also available in a printable format which gives you the ease of access for a quick revision right before your exam.

Vedantu has an experienced team of experts who do extensive research to come up with content for Class 5 students. The PDF adheres to the latest CBSE curriculum and can guarantee you high marks in exams.

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.