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"The purpose of producing energy is to meet three types of societal needs: - Mechanical work (electrical equipment, for example) - Heating supply - Heat removal (cooling systems) Energy does not disappear, it merely changes form. Different forms of energy have different qualities and degrees of usefulness "

The purpose of producing energy is to meet three types of societal needs: - Mechanical work (electrical equipment, for example) - Heating supply - Heat removal (cooling systems) Energy does not disappear, it merely changes form. Different forms of energy have different qualities and degrees of usefulness

"Chapter 1: What is Energy? Gas pump in car. Energy causes things to happen around us. Look out the window. The sun radiates light and heat energy. It helps plants to grow. At night, lamps in our home use electrical energy to light our rooms. When a car drives by, it is being powered by gasoline, a type of stored energy. The food we eat contains energy. We use that energy to work and play. We learned the definition of energy in the introduction:"

Chapter 1: What is Energy? Gas pump in car. Energy causes things to happen around us. Look out the window. The sun radiates light and heat energy. It helps plants to grow. At night, lamps in our home use electrical energy to light our rooms. When a car drives by, it is being powered by gasoline, a type of stored energy. The food we eat contains energy. We use that energy to work and play. We learned the definition of energy in the introduction: