MEDIUM
10th Jammu and Kashmir Board
IMPORTANT
Earn 100

Find out from your grandparents or other elders, how did they go to school, how did they get water for their daily needs when they were young, and what means of entertainment did they use?
Compare the above answers with how you do these tasks now. Is there a difference? If yes, in which-case more energy from external sources is consumed?

Important Questions on Sources of Energy

HARD
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Activity 14.7>Q i

Discuss in class the question of what is the ultimate source of energy for biomass wind and ocean thermal energy. Is geothermal energy and nuclear energy different in this respect? Why? 
Where would you place hydro-electricity and wave energy?

EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 1
What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?
MEDIUM
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 2
What are the limitations of the energy that can be obtained from the oceans?
EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 3
What is geothermal energy?
EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 4
What are the advantages of nuclear energy?
EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 1
Can any source of energy be pollution-free? Why or why not?
EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Questions>Q 2
Hydrogen has been used as rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?
EASY
10th Jammu and Kashmir Board
IMPORTANT
A Textbook of Science For Class 10>Chapter 5 - Sources of Energy>Activity 5.9>Q i

The estimated coal reserves are said to be enough to last us for another two hundred years. Do you think we need to worry about coal getting depleted in this case? Why or why not?