Sources of energy:-
Renewable energy resources include:
Water energy, such as wave machines, tidal barrages and hydroelectric power
Biomass energy, for example energy released from wood
There is a limited supply of non-renewable energy resources, which will eventually
Fossil fuels, such as coal, oil and natural gas
run out. They include:
Nuclear fuels, such as uranium
How is energy stored
One way to store it is in the form of chemical energy in a battery. When connected in a circuit, energy stored in the battery is released to produce electricity. Energy can also be stored in many other ways.
Batteries, gasoline, natural gas, food, water towers, a wound up alarm clock, a Thermos flask with hot water and even pooh are all stores of energy. They can be transferred into other kinds of energy.