Energy is the ability to do work or cause change. It exists in various forms such as kinetic, potential, thermal, chemical, and electromagnetic energy.

Pressing a balloon compresses the air inside, increasing its internal pressure and elastic potential energy. This change in energy is reflected in the balloon’s altered shape.

Biomass, derived from organic materials like plants and agricultural waste, can be burned directly for heat or converted into biofuels such as ethanol or biodiesel. These biofuels can be used for heating, electricity generation, or as transportation fuels.

Wind power is generated by harnessing the kinetic energy of moving air with wind turbines, which convert the energy into electricity. Hydroelectric power involves capturing the gravitational potential energy of water stored in dams and converting it into electricity as ...

Fossil fuels are extracted from the Earth’s crust through mining or drilling processes. Energy is then released by burning these fuels, converting their chemical energy into heat energy, which is harnessed for various applications such as electricity generation or transportation.