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NCERT solutions for Class 7 Science chapter 4 - Heat

Science Textbook for Class 7

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Chapters

NCERT Science Class 7

Science Textbook for Class  7 - Shaalaa.com

Chapter 4: Heat

Chapter 4: Heat solutions [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

NCERT Science Class 7

Science Textbook for Class  7 - Shaalaa.com

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 Science Textbook for Class 7 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing 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 Science and can use Shaalaa.com to keep it handy for your exam preparation

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