WHAT IS ENERGY?
Energy is the ability to do work or cause changes. It
is present everywhere and in everything.
Energy causes the changes we see around us. For
example, energy makes a ball at rest move when it is kicked.
Energy can exist in many forms. Chemical energy, light
energy, nuclear energy, mechanical energy, thermal energy and electrical energy
are different forms of energy. The energy we use on a daily basis is obtained
from different energy sources.
