CBSE Class 10 Physics Source of Energy Worksheet

CONCEPTUAL QUESTIONS-

Question : What is a source of energy? What are its essential characteristics?

Question : What is the cause of ocean thermal energy?

Question : What are renewable and nonrenewable sources of energy? Give examples.

Question : What is biomass and biomass energy?

Question : Out of two solar cookers, one was covered and the other one was left open. Which one of the two will be more efficient and why?

Question : What is the use of black painted surface in a solar cooker?

Question : Name the device used to convert

a. Solar energy into heat

b. Solar energy into electricity

Question :  a. Name four gases which are mainly present in biogas.

B .List two advantages of using biogas over fossil fuels.

Question : List any three hazards of nuclear waste. How does the disposal of nuclear waste pose a problem for the plant and animal life?

Question : Define anaerobic degradation.

Question : Mention three disadvantage of producing hydroelectricity by constructing the dams.

Question : What is a solar cell panel? Mention any three of its applications

Question : Explain the principle and working of a biogas plant. Draw neat diagram of a biogas plant and label (i)inlet of slurry (ii) digester and (iii) gas outlet

Question : Describe how a hydropower plant produces electricity .Write any two advantages of hydroelectric energy.

Question :   What causes the wind to blow? Explain the principle of working of a windmill.

Question : How will you demonstrate that thermal energy is converted into electricity energy?

Question :   Describe in brief how OTEC power plants can be used to generate electricity.

Question :   What is geothermal energy?

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

Question : List three factors responsible for the wind .State three limitations in harnessing wind energy.

Question : What are the hot spots inside earth’s crust?

Question : Give two advantages of using nuclear energy.

Question : a)What is nuclear fusion ? Give an example for it

b)What is nuclear fission ? Give an example for it

Question : The solar constant at a place is 1.4 KW/m2 .How much solar energy will be received at this place per second over an area of 5 m2.

Question : Calculate the heat energy by 5 m2 area on the earth’s surface in 1 minute ,assume that 47% of the solar energy strike earth’s surface.