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NCERT solutions for Class 7 Science chapter 4 - Heat [Latest edition]

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Chapters

Chapter 4: Heat

NCERT solutions for Class 7 Science Chapter 4 Heat [Pages 45 - 47]

Q 1 | Page 45

State similarities and differences between the laboratory thermometer and the clinical thermometer.

Q 2 | Page 45

Give two examples each of conductors and insulators of heat.

Q 3.1 | Page 45

Fill in the blanks:

The hotness of an object is determined by its __ __.

Q 3.2 | Page 45

Fill in the blanks:

Temperature of boiling water cannot be measured by a __ __ thermometer.

Q 3.3 | Page 45

Fill in the blanks:

Temperature is measured in degree ___ _.

Q 3.4 | Page 45

Fill in the blanks:

No medium is required for transfer of heat by the process of ___ _.

Q 3.5 | Page 45

Fill in the blanks

A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of __ _ _.

Q 3.6 | Page 45

Fill in the blanks:

Clothes of ___ _ colours absorb heat better than clothes of light colours.

Q 4 | Page 46

Match the following:

Land breeze blows during summer
Sea breeze blows during winter
Dark coloured clothes are preferred during day
Light coloured clothes are preferred during night

 

Q 5 | Page 46

Discuss why wearing more layers of clothing during winters keeps us warmer than wearing just one thick piece of clothing.

Q 6 | Page 46

Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation

Q 7 | Page 46

In places of hot climate it is advised that the outer walls of houses be painted white. Explain.

Q 8 | Page 46

One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be

  •  80°C

  • more than 50°C but less than 80°C

  • 20°C

  • between 30°C and 50°C

Q 9 | Page 47

An iron ball at 40°C is dropped in a mug containing water at 40°C.

The heat will

  • flow from iron ball to water.

  • not flow from iron ball to water or from water to iron ball.

  • flow from water to iron ball.

     

  • increase the temperature of both.

Q 10 | Page 47

A wooden spoon is dipped in a cup of ice cream. Its other end

  • becomes cold by the process of conduction

  • becomes cold by the process of convection.

  • becomes cold by the process of radiation.

  • does not become cold.

Q 11 | Page 47

Stainless steel pans are usually provided with copper bottoms. The reason for this could be that

  • copper bottom makes the pan more durable.

  • such pans appear colourful.

  • copper is a better conductor of heat than the stainless steel

  • copper is easier to clean than the stainless steel.

Chapter 4: Heat

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NCERT solutions for Class 7 Science chapter 4 - Heat

NCERT solutions for Class 7 Science chapter 4 (Heat) 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 7 Science 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 7 Science chapter 4 Heat are Concept of Hot and Cold, Measuring Temperature, Laboratory Thermometer, Transfer of Heat, Kinds of Clothes Wear in Summer and Winter.

Using NCERT Class 7 solutions Heat 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 7 prefer NCERT Textbook Solutions to score more in exam.

Get the free view of chapter 4 Heat Class 7 extra questions for Class 7 Science and can use Shaalaa.com to keep it handy for your exam preparation

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