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Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 7 - Energy Flow and Practices for Conservation of Resources [Latest edition]

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Class 9 A New Approach to ICSE Physics Part 1 - Shaalaa.com
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Chapter 7: Energy Flow and Practices for Conservation of Resources

Exercise
Exercise

Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 7 Energy Flow and Practices for Conservation of Resources Exercise

Exercise | Q 1

Name two renewable and the two non-renewable sources of energy.

Exercise | Q 2

Why should we conserve the non-renewable sources of energy?

Exercise | Q 4

State the main difference between the renewable and non-renewable sources of energy.

Exercise | Q 5

Explain why is it no wise to regard wood as a renewable sources of energy.

Exercise | Q 6

Why are fossil fuels called non-renewable sources of energy?

Exercise | Q 7

State two limitations of solar energy.

Exercise | Q 8

State four traditional uses of solar energy.

Exercise | Q 9

State three ways by which you can enhance the collection of solar energy.

Exercise | Q 10

State two advantages of box type solar cooker.

Exercise | Q 11

What is the range of temperature which can be achieved in it?

Exercise | Q 12.1

What are semiconductors? Name two semiconductors.

Exercise | Q 12.2

What are doped semiconductors? Name two materials used for doping the semiconductors. What is the advantage of doping the semiconductors?

Exercise | Q 13

Name a device which directly converts solar energy to electric energy.

Exercise | Q 14

What is a solar panel? To what uses are the solar panels put?

Exercise | Q 15.1

What is biogas?

Exercise | Q 15.2

Which component of biogas is used as a fuel?

Exercise | Q 15.3

Describe a fixed dome type biogas plant with the help of a labelled diagram.

Exercise | Q 16

Name the agent which decomposes animal dung into biogas.

Exercise | Q 17

Write any two uses of biogas.

Exercise | Q 18.1

Name the kind of energy possessed by the wind.

Exercise | Q 18.2

State two advantages and two limitations of wind as a source of energy.

Exercise | Q 19

With the help of a diagram explain how wind energy is converted into electric energy.

Exercise | Q 20.1

What do you understand by the term hydroelectric power?

Exercise | Q 20.2

Explain the energy changes taking place in a hydroelectric dam?

Exercise | Q 21

State two advantages and two limitations of Hydel Power.

Exercise | Q 22

Give four reasons, why the use of cowdung in biogas preferred to burning of cowdung cakes.

Exercise | Q 23

Why is charcoal considered better fuel than wood?

Exercise | Q 24

Name two forms of sea energy.

Exercise | Q 25

By which name heat energy in the interior of the earth is known?

Exercise | Q 26

Name the major constituent of natural gas.

Exercise | Q 27.1

Name the nuclear process that is responsible for the explosion of an atom bomb.

Exercise | Q 27.2

Name the nuclear process that is responsible for the release of energy by sun.

Exercise | Q 28.1

Define nuclear fission.

Exercise | Q 28.2

Nuclear fusion. 

Exercise | Q 29.1

Describe the condition for nuclear fission.

Exercise | Q 29.2

Describe the condition for nuclear fusion.

Exercise | Q 30

Explain the difference between nuclear fission and nuclear fusion.

Exercise | Q 31

Explain how geothermal energy is used in generating electricity.

Exercise | Q 32

What are hot spots? How can you extract energy from a hot spot, if it does not come in contact with underground water?

Exercise | Q 33

Explain, why nuclear fusion is not being used to meet day to day energy needs.

Exercise | Q 34

What is nuclear waste? What are hazard of nuclear waste to living beings? How is nuclear waste disposed off?

Exercise | Q 35

What are environmental consequences of using fossil fuels?

Exercise | Q 36

Energy from various sources is considered to have been derived from the Sun. Do you agree? Justify your answer by giving two examples.

Chapter 7: Energy Flow and Practices for Conservation of Resources

Exercise
Class 9 A New Approach to ICSE Physics Part 1 - Shaalaa.com

Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 7 - Energy Flow and Practices for Conservation of Resources

Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 7 (Energy Flow and Practices for Conservation of Resources) 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 CISCE Class 9 A New Approach to ICSE Physics Part 1 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. Goyal Brothers Prakashan textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 9 A New Approach to ICSE Physics Part 1 chapter 7 Energy Flow and Practices for Conservation of Resources are Expansion of Solids, Hope’s Experiment to Demonstrate the Anomalous Expansion of Water, Consequences of Anomalous Expansion of Water, Energy Flow in an Ecosystem, Application of Laws of Thermodynamics in Energy Flow, Conventional Sources of Energy and Non-conventional Sources of Energy, Solar Energy, Solar Energy Devices, Hydroelectric Energy, Bio-energy, Anomalous Expansion of Water, Source of Energy, Wind Energy, Energy from the Sea, Heat and Its Unit, Temperatures, Expansion of Substances (Thermal Expansion), Geothermal Energy, Nuclear Energy, Conservation of Coal, Petroleum, and Natural Resources, Energy Degradation, Conservation and Judicious Use of Resources, Green House Effect, Preventive Measures of Green House Effect, Global Warming, Preventive Measures of Global Warming, Future Predictions of Global Warming, Expansion of Liquids, Expansion of Gases.

Using Goyal Brothers Prakashan Class 9 solutions Energy Flow and Practices for Conservation of Resources 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 Goyal Brothers Prakashan Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 9 prefer Goyal Brothers Prakashan Textbook Solutions to score more in exam.

Get the free view of chapter 7 Energy Flow and Practices for Conservation of Resources Class 9 extra questions for Class 9 A New Approach to ICSE Physics Part 1 and can use Shaalaa.com to keep it handy for your exam preparation

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