Around us, things move, light up, make sounds, or get warmer or cooler. Something makes this all happen—we call that energy. Energy is what makes things move, light up, produce sound, do work and change temperature.
Energy comes from various sources depending on the system:
Comparing a dry cotton wick with a wick soaked in oil (diya) shows that the oil acts as a fuel to keep the flame burning longer.
Electricity is a highly versatile form of energy used to run appliances, machines, and industries. It can be converted into movement, sound, light, and heat.
Energy efficiency means using less energy to do the same work (e.g., using LED bulbs instead of incandescent bulbs to save electricity).
Most electricity currently comes from burning fossil fuels like coal, which causes air pollution. However, we can generate electricity from natural, non-polluting sources.
Electricity generated from these natural sources is called clean energy because it does not pollute the planet with smoke or waste.
Our body stores energy for future use, allowing us to function even if we skip a meal. Similarly, batteries contain stored energy to power devices.
Vaastu Shastra is an ancient Indian system of design and architecture that helps plan buildings in harmony with nature, optimizing the use of natural light, wind, and heat to reduce energy consumption.