1. Photosynthesis: Millions of years ago, ancient plants used sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen through photosynthesis. This process stores energy from the sun within the chemical bonds of glucose.
2. Decomposition: When these plants died, they were buried under layers of sediment. Over time, heat and pressure from the Earth transformed the organic matter into fossil fuels like coal, oil, and natural gas.
3. Chemical Bonds: The chemical bonds in fossil fuels hold the energy captured from the sun during photosynthesis. These bonds are like tiny springs that store energy.
4. Combustion: When we burn fossil fuels, we break these chemical bonds. This releases the stored energy in the form of heat and light.
In summary: Fossil fuels are essentially ancient sunlight stored within the chemical bonds of hydrocarbons. Burning them releases this stored energy, which we use for electricity, transportation, and other purposes.
