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24 Cards in this Set
- Front
- Back
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Energy? |
ability to cause change |
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Kinetic Energy? |
energy in the form of motion |
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Potential Energy? |
Stored energy |
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Work? |
transfer of energy through motion |
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Mechanical Energy? |
total amount of kinetic and potential energy in a system |
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Law of conservation? |
energy may change form but it cannot be created or destroyed |
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Temperature? |
The measure of the average kinetic energy of the particles in a sample matter |
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Thermal Energy? |
Total energy of the particles in a material |
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Heat? |
Thermal energy that flows from something with a higher temperature to something with a lower temperature |
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Thermal Pollution? |
occurs when waste heat significantly changes the temperature of the environment
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Conduction? |
Transfer of energy through matter by direct contact of particles ex, pot of water on the stove. The burner is hot...it touches the pan...pan gets hot...pan touches the water....water gets hot. |
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Fluid? |
Any material the flows |
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Convection? |
The transfer of energy by the bulk movement of matter water boiling in pan bottom water gets hot and expands...comes to top and the cooler water sinks to the bottom of pan causing movement. |
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Convection currents? |
Water heated in a pan Winds Ocean currents |
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Radiation? |
The transfer of energy in the form of waves. Ex: Earth receives the energy from the sun due to thermal radiation. |
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Insulators? |
Do not allow heat to move easily through them Ex: plastic foam for buildings down feathers for jackets |
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Radiator? |
Device with a large surface area designed to heat the air near it by conduction. Then convention currents circulate the heat to all parts of the room. |
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Solar Energy |
Energy from the sun |
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Passive Solar Heating? |
Direct use of the sun's energy to heat something, without using fans or mechanical devices to transfer heat from one area to another |
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Active Solar Heating? |
Collecting the sun's energy with solar panels, heating water with that energy, and storing the heated water to use the energy later. Has fans to move the energy. |
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Internal combustion engine? |
Burns inside the engine in chambers called cylinders Ex: Cars and Trucks |
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External combustion engine? |
Fuel is burned outside the engine Ex: Old fashioned train steam engine |
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Heat Mover? |
A device that moves thermal energy from one location and releases it in another location having a different temperature
Ex: Refrigerator/ air conditioner |
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OTEC? |
Ocean Thermal Energy Conversion Process that uses heat engines to convert differences in ocean water temperature into mechanical energy to drive turbines |
