down 2.Lightning is a form of ____ energy. down 4.A form of energy that results from the attraction of objects that are made of iron. down 6.The energy that is stored within atoms. down 7.A form of energy that results from the movement of machine parts. down 8.A measure of energy that is used for measuring the amount of energy in food. down 9.Fuels such as coal and oil that can be used only once.