Energy - The ability to do work, Joule - The unit of measurement for energy, Potential energy - Stored energy that is just waiting to do work eg. coiled spring, Kinetic energy - The energy that moving things have, Chemical energy - The energy stored in chemicals like petrol, coal and food, Nuclear energy - The energy stored in the nucleus of an atom, Non-renewable energy - Unsustainable energy sources, they cannot be replace, Renewable energy - Sustainable energy sources, can be continually replaced by nature, Sun - The primary source of all energy on the planet, Photosynthesis - The process in which green plants make food using sunlight, Respiration - The release of energy from food, Machine - A devise that converts one type of energy to another, Dissipation - The word used to describe the loss of energy during energy conversions, Biomass - The use of fast growing plants as a source of energy, Solar energy - Energy produced by the sun, Geothermal energy - Energy got from under the earth's surface, Dynamo - A device that change kinetic energy into electrical energy, Insulation - Materials that do not conduct heat, Conductors - Materials that allow heat to travel through them easily, Wall cavity - The gap found in between rows of blocks in a building, Biofuel - A fuel that is got directly from living organisms, Hydroelectricity - Electricity produced using the power of water, Electrolysis - Breaking water into hydrogen and oxygen using electricity, Acid rain - Rain formed when water vapour is mixed with harmful gases from burning fossil fuels ,

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