Heat naturally transfers from:, Cold areas to hot areas, Hot areas to cold areas, Low pressure to high pressure only, Small objects to large objects only, Photovoltaic cells convert solar energy into:, Mechanical energy, Sound energy, Electrical energy, Chemical waste, Which property describes how much radiation passes through a surface?, Transmissivity, Reflectivity, Emissivity, Density, A blackbody is an object that:, Reflects all radiation, Absorbs all radiation directed toward it and emits radiation effectively, Transmits all radiation through it, Does not interact with radiation

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