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Energy is integral to everything around us, manifesting in various forms such as mechanical, chemical, and electromagnetic energy. Throughout history, innovations like wheels, pulleys, and gears have revolutionized the way we utilize mechanical energy for work. Chemical reactions, which involve energy changes, power biological processes like photosynthesis and respiration, and can be harnessed to produce electricity and heat. Furthermore, advancements in electromagnetic energy, including fuel cells and electric cars, highlight the growing reliance on renewable energy sources for a sustainable future.
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Energy Energy of Movement Electromagnetic Chemical
Mechanical Energy • We have always relied on mechanical energy to do work. • History is dotted with many discoveries that have reduced effort required to do this work. • Wheels, pulleys, gears and levers have all been used to reduce effort
Chemical Energy • The chemical reactions that occur in nature all involve a change in energy level – giving off energy or requiring energy to occur • Photosynthesis and respiration in living things; chemical reactions in nature such as oxidation and electrolytic replacement • These chemical processes can be harnessed to generate other forms of energy such as electricity, heat and even light
Electromagnetic Energy • Magnetic fields • Radiation
Voltaire Franklin
The Future • Fuel Cells • Electric Cars • Alternate Renewable Energy Sources
