Thermal energy in a system is associated with the disordered motions of its atoms or molecules. Light energy is associated with the frequency of electromagnetic waves. Electrical energy is associated with an electric current in a circuit. Chemical energy is associated with the composition of a substance. Elastic energy is associated with the stretching or compressing of an elastic object. Gravitational energy is associated with the height of an object above a reference point. Thermal energy is associated with the temperature of an object. Motion energy is associated with the speed of an object. Energy appears in different forms and can be transformed within a system.
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