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NCERT solutions for Class 5 Environmental Studies - Looking Around chapter 15 - Blow Hot, Blow Cold [Latest edition]

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Class 5 Environmental Studies - Looking Around - Shaalaa.com
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Chapter 15: Blow Hot, Blow Cold

Do thisThink and tellBlow in different waysWriteDo this and discussHow many breathsThe clock inside youSnake tells the flow of air!What we have learnt
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Do this [Page 141]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdDo this [Page 141]

Do this | Q 1 | Page 141

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.

  • Have you warmed your hands in winter by blowing on them when they are cold? How does it feel?
Do this | Q 2 | Page 141

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.

  • Blowhard from your mouth onto your hands. How did you find the air from your mouth as compared to the air around you? Was it hotter, or cooler?
Do this | Q 3 | Page 141

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.

  • Now put your hands at some distance from your mouth, and blow again. Does the air from your mouth feel warm? Why?
Think and tell [Pages 142 - 143]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdThink and tell [Pages 142 - 143]

Think and tell | Q 1 | Page 142

Can you think of any other way in which you use the warmth from your breath?

Think and tell | Q 2 | Page 142

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?

Think and tell | Q 3 | Page 142

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?

Think and tell | Q 4 | Page 142

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?

Think and tell | Q 5 | Page 142

If you were to cool these three hot things – dal, roti, rice – in which ways would you do so?

Think and tell | Q 6 | Page 143

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

Think and tell | Q 7 | Page 142

Picture 1 - 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?

Think and tell | Q 8 | Page 142

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?

Blow in different ways [Pages 143 - 144]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdBlow in different ways [Pages 143 - 144]

Blow in different ways | Q 1 | Page 143

Make whistles of the things given below. Write in a sequence–from the loudest to the softest whistle.

– Wrapper of a toffee 

– A leaf

– A balloon

– The cap of a pen

– Any other thing

Blow in different ways | Q 2 | Page 144

Have you seen people playing different musical instruments like flute, dholak, been ...., guitar, mridang, etc. Can you recognize their sounds with your eyes closed? Find out more about these musical instruments. Collect their pictures too.

Write [Page 144]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdWrite [Page 144]

Write | Q 1 | Page 144

Can you name some things which produce melodious or pleasing sounds when we blow into them?

Do this and discuss [Page 144]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdDo this and discuss [Page 144]

Do this and discuss | Q 1 | Page 144

Have you seen someone blowing on their spectacles to wipe them clean? How does the air from the mouth help in cleaning the spectacles?

Do this and discuss | Q 2 | Page 144

Take a glass. Bring it near your mouth and blow hard on it. Do this two or three times. Does the glass look hazy?

Do this and discuss | Q 3 | Page 144

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?

Do this and discuss | Q 4 | Page 144

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

Do this and discuss | Q 5 | Page 144

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?

How many breaths [Page 145]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdHow many breaths [Page 145]

How many breaths | Q 1 | Page 145

Put your finger under your nose. Can you feel any air when you breathe out from your nose?

How many breaths | Q 2 | Page 145

Count how many times in one minute do you breathe in and breathe out.

How many breaths | Q 3 | Page 145

Jump 30 times. Did you feel breathless?

How many breaths | Q 4 | Page 145

Now again count how many times in one minute you breathed in and out.

How many breaths | Q 5 | Page 145

What was the difference in your count before and after jumping?

The clock inside you [Page 145]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdThe clock inside you [Page 145]

The clock inside you | Q 1 | Page 145

You have all heard the ‘tick tick’ of the clock. Have you seen a doctor using a stethoscope to listen to our chest? What do you think she hears? Where is the sound coming from? Is there a clock inside your chest that keeps ticking away?

The clock inside you | Q 2 | Page 145

Do you want to listen to your heartbeat? Take a rubber tube as long as the distance from your shoulder to your elbow. At one end of the tube fix a funnel. Place the funnel on the left side of your chest. Put the other end of the tube to your ear. Listen carefully. Did you hear a dhak dhak sound?

Snake tells the flow of air! [Page 146]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdSnake tells the flow of air! [Page 146]

Snake tells the flow of air! | Q 1 | Page 146

Stand with this snake below a fan. Look in which direction it moves. Take this paper snake to different places and observe its movement.

Snake tells the flow of air! | Q 2 | Page 146

Can you understand from the movement of the snake - if the air is moving upwards or downwards?

What we have learnt [Page 146]

NCERT solutions for Class 5 Environmental Studies - Looking Around Chapter 15 Blow Hot, Blow ColdWhat we have learnt [Page 146]

What we have learnt | Q 1 | Page 146

While playing, Amit hit a wall. His forehead was swollen. Didi immediately folded a scarf (4-5 times), blew on it, and kept it on Amit's forehead. Why do you think didi did this?

What we have learnt | Q 2 | Page 146

We blow to cool hot things as well as to warm them. Give examples of each.

Chapter 15: Blow Hot, Blow Cold

Do thisThink and tellBlow in different waysWriteDo this and discussHow many breathsThe clock inside youSnake tells the flow of air!What we have learnt
Class 5 Environmental Studies - Looking Around - Shaalaa.com

NCERT solutions for Class 5 Environmental Studies - Looking Around chapter 15 - Blow Hot, Blow Cold

NCERT solutions for Class 5 Environmental Studies - Looking Around chapter 15 (Blow Hot, Blow Cold) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Class 5 Environmental Studies - Looking Around solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 5 Environmental Studies - Looking Around chapter 15 Blow Hot, Blow Cold are Blow Hot, Blow Cold.

Using NCERT Class 5 solutions Blow Hot, Blow Cold exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 5 prefer NCERT Textbook Solutions to score more in exam.

Get the free view of chapter 15 Blow Hot, Blow Cold Class 5 extra questions for Class 5 Environmental Studies - Looking Around and can use Shaalaa.com to keep it handy for your exam preparation

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