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26 Cards in this Set
- Front
- Back
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thermal energy
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total value of the kinetic and potential energy of a group of molecules
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temperature
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measure of average value of the kinetic energy of the particles in a substance. Can be measured using fahrenheit, celcius, and kelvin scales
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thermal pollution
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an increase in the temperature of a body of water, caused by adding warmer water
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turbine
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set of steam-powered fan blades that spins a generator at a power plant
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alternative resource
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any renewable and inexhaustible sources of energy to generate electricity, including solar energy, wind and geothermal energy
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conduction
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transfer of heat by direct contact, occurs when particles of one substance collide with particles of another substance, transferring kinetic energy
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convection
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transfer of thermal energy by the movement of heated molecules from one place to another in a gas or liquid
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conductor
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materials such as copper or silver through which electrons can move easily or any material that transfers heat easily
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chemical energy
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energy that is stored in chemicals
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engine
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device that converts thermal energy into mechanical energy
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energy
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the ability to cause change
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electrical energy
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energy carried by electic current that comes out of batteries and wall sockets; is generated at large power plants; and is readily transformed into other types of energy
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generator
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device that uses a magnetic field to turn kinetic energy into electrical energy and can produce direct current and alternating current
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internal combustion engine
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engine in which fuel is burned in a combustion chamber inside the engine
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inexhaustible resource
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is an energy source that cannot be used up by humans
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heat
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movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature
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kinetic energy
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energy an object has due to its motion
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law of conservation of energy
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energy can change its form but it is never created or destroyed
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nonrewable resource
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any energy sources that eventually will run out, such coal and oil
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nuclear energy
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energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants
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potential energy
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energy stored in an object due to its position
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photovoltaic
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device that transforms radiant energy directly into electrical energy
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radiation
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transfer of thermal energy by electomagnetic waves
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radiant energy
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energy carried by an electromagnetic wave
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renewable resource
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any energy sources that are replenished continually
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specific heat
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amount of energy necessary to raise the temperature of 1 kg of a substance by 1 degree celcius
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