WHAT IS ENERGY? Life is impossible without energy. The demand for energy is ever-increasing. Where do we get energy from? The Sun is the biggest natural source of energy to us. Many of our energy s
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FORMS OF ENERGY – KINETIC ENERGY Luckily the world we live in provides energy in many different forms. The various forms include mechanical energy (potential energy + kinetic energy), he
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FORMS OF ENERGY – POTENTIAL ENERGY Activity 11.8: * Take a rubber band. * Hold it at one end and pull from the other. The band stretches. * Release t
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POTENTIAL ENERGY OF AN OBJECT AT A HEIGHT An object increases its energy when raised through a height. This is because work is done on it against gravity while it is being raised. The energy presen
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ARE VARIOUS ENERGY FORMS INTERCONVERTIBLE? Can we convert energy from one form to another? We find in nature a number of instances of conversion of energy from one form to another Acti
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LAW OF CONSERVATION OF ENERGY Activity 11.13: * Sit in small groups. * Discuss the various ways of energy conversion in nature. * Discuss following questio
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