Explain how the sun and the other stars generate energy.

(a) Explain how tidal energy can be used to generate electricity. (b) Why is tidal energy not likely to be a potential source of energy ?

What is geothermal energy? Explain how geothermal energy is used to generate electricity . State two advantages of geothermal energy.

Explain how sun is the ultimate source of energy by taking any one example

(a) What is the source of energy of this sun and other stars ? (b) Describe the working of a hydrogen bomb. (c ) What is common between the sun and a hydrogen bomb ?

How electic energy is produced ? OR Explain how an energy source, a turbine and a generator are used to produce electric energy.

Explain how in nuclear energy is generated through nuclear fission process.

Energy generation in sun and other stars in due to