1) This is produced by the sun and is very important for the biosphere. a) Chemical energy b) Kinetic energy c) Light energy d) Mechanical energy 2) This is the result of movement of tiny particles within an object. a) Light energy b) Thermal energy, or heat c) Mechanical energy d) Electrical energy 3) This is stored energy which is released when a chemical reaction takes place. a) Chemical energy b) Sound c) Potential energy d) Thermal energy, or heat 4) This is energy produced by vibrations. a) Sound b) Electrical energy c) Light energy d) Kinetic energy 5) This is stored in objects. a) Kinetic energy b) Mechanical energy c) Electrical energy d) Potential energy 6) This is produced by movement. a) Light energy b) Chemical energy c) Kinetic energy d) Potential energy 7) This is the sum of potential and kinetic energy. a) Mechanical energy b) Electrical energy c) Kinetic energy d) Sound 8) This is used to power machines because it can be transformed into many different forms. a) Sound b) Light energy c) Electrical energy d) Chemical energy

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