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Energy is the ability to do work The two different types of energy are kinetic and potential Kinetic energy is energy in motion and potential energy is energy that is stored Energy is measured in units which are BTU British thermal unit and a joule The Law of Conservation of Energy states that energy cant be created or destroyed but it can be changed in form Heat is a form of energy that comes in different forms such as conduction convection and radiation Conduction is when energy is passed directly from one item to another Metals are excellent conductors of energy Plastics or other materials arent These are called insulators Convection is the movement of gases or liquids from a cooler spot to a warmer spot Radiation is the final form of movement of heat energy Electricity is the flow of energy from one place to another Atoms have electrons circling them Some are loosely attached When electrons move among the atoms of matter a current of electricity is created Electricity flows through some objects better than others Copper is a good conductor of electricity The electric force that pushes electrons is measured in volts Batteries store chemical energy An electric circuit connects the positive and negative poles of the battery and allows an electrical current to happen Static electricity doesnt move It is the energy that can stick a balloon to a wall if you rub the balloon across a sweater Lightning is another form of static electricity Fuels are used to heat water in a boiler to make steam That steam turns a turbine The spinning shaft of the turbine drives the generator Many types of fuels are used in the boiler to heat the water When a wire or any electrically conductive material moves across a magnetic field an electric current is produced in that wire The inside of the earth has a core a hot liquid mantle
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