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Balbharati solutions for Class 8 Science chapter 14 - Measurement and Effects of Heat

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Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Chapter 14: Measurement and Effects of Heat

Exercise

Chapter 14: Measurement and Effects of Heat Exercise Exercise solutions [Page 103]

Exercise | Q 1.1 | Page 103

Whom should I Pair with?

Group A Group B
a. Temperature of a healthy human body  296 K
Boiling point of water 98.6°F
Room temperature C
Freezing point of water  212F
Exercise | Q 2.1 | Page 103

 Who is telling the truth?

The temperature of a substance is measured in joules.

Exercise | Q 2.2 | Page 103

Who is telling the truth?

Heat flows from an object at higher temperature to an object at lower temperature.

Exercise | Q 2.3 | Page 103

Who is telling the truth?

Joule is the unit of heat.

Exercise | Q 2.4 | Page 103

Who is telling the truth?

Objects contract on heating.

Exercise | Q 2.5 | Page 103

Who is telling the truth?

Atoms of a solid are free.

Exercise | Q 2.6 | Page 103

Who is telling the truth?

The average kinetic energy of atoms in a hot objects is less than the average kinetic energy of atoms in a cold objects.

Exercise | Q 3.1 | Page 103

You will find if you search.

A thermometer is  used to measure _________ .

Exercise | Q 3.2 | Page 103

You will find if you search.

The apparatus used to measure heat is called a ____________.

Exercise | Q 3.3 | Page 103

You will find if you search.

Temperature is the measures of the ___________ Kinetic energy of the atoms in a substance.

Exercise | Q 3.4 | Page 103

You will find if you search.

The heat contained in a substannce is the measures of the ___________ kinetic energy of atoms in the substance. 

Chapter 14: Measurement and Effects of Heat Exercise Exercise solutions [Page 103]

Exercise | Q 2 | Page 103

Nishigandha kept a vessel containing all the ingredients for making tea in a solar cooker. Shivani kept a similar vessel on a stove. Whose tea will be ready first and why?

Exercise | Q 3.1 | Page 103

Write brief answers.

Describe a clinical thermometer. How does it differ from the thermometer used in laboratory?

Exercise | Q 3.2 | Page 103

Write brief answers.

What is the difference between heat and temperature ? what are their units.

Exercise | Q 3.3 | Page 103

Write brief answers.

Explain the construction of a calorimeter. Draw the necessary figure.

Exercise | Q 3.4 | Page 103

Write brief answers.

Explain why rails have gaps at specific distances.

Exercise | Q 3.5 | Page 103

Write brief answers.

Explain with the help of formulae the expansion coefficients of liquid and gas. 

Exercise | Q 4.1 | Page 103

Solve the following example.

What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?

Exercise | Q 4.2 | Page 103

Solve the following example.

A bridge is made from 20 m long iron rods. At temperature 18C, the distance between two rods in 0.4 cm. Up to what temperature will   the bridge be in good shape?

Exercise | Q 4.3 | Page 103

Solve the following example.

At 15C the height of Eifel tower is 324 m. If it is made of iron, what will be the increase in length in cm, at 30C?

Exercise | Q 4.4 | Page 103

Solve the following example.

Two substances A and B have specific heats c and 2 c respectively. If A and B are given Q and 4Q amounts of heat respectively, the change  in their temperatures is the same. If the mass of A is m, what is the mass of B?

Exercise | Q 4.5 | Page 103

Solve the following example.

When a substance having mass 3 kg receives 600 cal of heat, its temperature increases by 10C. What is the specific heat of the substance?

Chapter 14: Measurement and Effects of Heat

Exercise

Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Balbharati solutions for Class 8 Science chapter 14 - Measurement and Effects of Heat

Balbharati solutions for Class 8 chapter 14 (Measurement and Effects of 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 Maharashtra State Board Balbharati Class 8 Science - General 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. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Science chapter 14 Measurement and Effects of Heat are Sources of Heat, Concept of Temperature, Concepts of Heat and Temperature, Laboratory Thermometer, Calorimetry - Specific Heat Capacity, Effects of Heat, Concept of Expansion, Expansion of Liquids, Expansion of Gases.

Using Balbharati Class 8 solutions Measurement and Effects of 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 Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board Class 8 prefer Balbharati Textbook Solutions to score more in exam.

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