State the law of conservation of energy.

How is energy stored in a bow? How is this energy utilised?

Explain with the help of an example how magnetism is a form of energy.

How can you prove that light is a form of energy?

What is biomass? How can we get energy from biomass?

What do you mean by energy conservation? Why should energy be conserved? Give any two steps you would take at home to conserve energy.

State and explain the factors on which the kinetic energy of a body depends. 

Differentiate between: Kinetic energy and potential energy

Differentiate between Nuclear fission and nuclear fusion