Understanding Energy Types and Sources
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Energy is the ability to do work, existing in various forms including kinetic, potential, and thermal energy, while energy sources are classified as renewable or non-renewable, and energy transfer occurs through conduction, convection, and radiation.
The ability to do work or make things happen
Energy of motion (e.g., a rolling ball, flowing river)
Stored energy (e.g., a stretched rubber band, water behind a dam)
Energy from moving parts (e.g., gears, wheels)
Heat energy from moving particles (e.g., hot stove, sunlight)
Energy stored in substances (e.g., food, batteries, gasoline)
Energy from moving electrons (e.g., lightning, power lines)
Energy we can see (e.g., sunlight, lightbulbs)
Energy from vibrations (e.g., music, voices)
Energy from splitting atoms (e.g., power plants, stars)
Energy from endless sources (e.g., solar, wind, hydropower)
Energy from limited sources (e.g., coal, oil, natural gas)
Energy from the sun (e.g., solar panels)
Energy from moving air (e.g., wind turbines)
Energy from flowing water (e.g., dams, waterfalls)
Heat from Earth’s core (e.g., hot springs, volcanoes)
Energy from plants/waste (e.g., wood, biofuels)
Heat transfer through solids (e.g., metal spoon in hot soup)
Heat transfer through fluids (e.g., boiling water, warm air rising)
Heat transfer through waves (e.g., sunlight warming your skin)
Using less energy to do the same task (e.g., LED lightbulbs)
Energy cannot be created or destroyed—only changed