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NCERT solutions Science Class 10 chapter 14 Sources of Energy

Chapters

NCERT Science Class 10

Science Textbook for Class 10

Chapter 14 - Sources of Energy

Page 243

What is a good source of energy?

Q 1 | Page 243

What is a good fuel?

Q 2 | Page 243

If you could use any source of energy for heating your food, which one would you use and why?

Q 3 | Page 243

Page 248

What are the disadvantages of fossil fuels?

Q 1 | Page 248

Why are we looking at alternate sources of energy?

Q 2 | Page 248

 How has the traditional use of wind and water energy been modified for our convenience?

Q 3 | Page 248

Page 253

What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?

Q 1 | Page 253

What are the limitations of the energy that can be obtained from the oceans?

Q 2 | Page 253

What is geothermal energy?

Q 3 | Page 253

Page 253

Can any source of energy be pollution-free? Why or why not?

Q 1 | Page 253

Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?

Q 2 | Page 253

Page 254

 Name two energy sources that you would consider to be renewable. Give reasons for your choices.

Q 1 | Page 254

Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.

Q 2 | Page 254

Pages 254 - 255

A solar water heater cannot be used to get hot water on
(a) a sunny day

(b) a cloudy day

(c) a hot day

(d) a windy day
Q 1 | Page 254

Which of the following is not an example of a bio-mass energy source?
(a) wood
(b) gobar gas
(c) nuclear energy
(d) coal

Q 2 | Page 255

Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?
(a) Geothermal energy
(b) Wind energy
(c) Nuclear energy
(d) Bio-mass

Q 3 | Page 255

Compare and contrast fossil fuels and the Sun as direct sources of energy

Q 4 | Page 255

Compare and contrast bio-mass and hydro electricity as sources of energy.

Q 5 | Page 255

 What are the limitations of extracting energy from –

Q 6 | Page 255

 On what basis would you classify energy sources as
(a) renewable and non-renewable?
(b) exhaustible and inexhaustible?
Are the options given in (a) and (b) the same?

Q 7 | Page 255

What are the qualities of an ideal source of energy?

 

Q 8 | Page 255

What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?

Q 9 | Page 255

What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?

Q 10 | Page 255

NCERT Science Class 10

Science Textbook for Class 10
S