Electricity glossary terms chapter 12 que cards

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  1. Direct Current (DC)
    current in which charged particles travel through a circuit in only one direction

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  2. Alternating Current (AC)
    a current in which electrons move back and forth in a circuit

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  3. Transformer
    an electrical device that changes the size of the potential difference of an alternating current

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  4. Circuit Breaker
    a safety device that is placed in series with other circuits that lead to appliances and outlets

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  5. Fuse
    a safety device that is found in older buildings and some appliances; like a circuit breaker, it is placed in series with other circuits that lead to appliances and outlets

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  6. Electrical Power
    the rate at which an appliance uses electrical energy

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  7. Watt (W)
    a unit of electrical power; 1 kilowatt = 1000 W

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  8. Kilowatt (kW)
    a practical unit for electrical power; 1 kW = 1000 W

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  9. electrical energy
    the energy that is used by an appliance at any given setting; is determined by multiplying its power rating by the length of time it is used

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  10. Kilowatt-hour (kW x hour)
    the practical unit of electrical energy

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  11. energuide labels
    a label that gives details about how much energy an appliance uses in one year of normal use

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  12. smart meter
    a meter that records the total electrical energy used hour by hour and sends this information to the utility company automatically

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  13. time of use pricing
    a system of pricing in which the cost of each kW x h of energy used is different at different times of the day

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  14. phantom load
    the electricity that is consumed by an appliance or device when it is turned off

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  15. efficiency
    the ratio of useful energy output to total energy input, expressed as a percentage

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  16. base load
    the continuous minimum demand for electrical power

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  17. hydroelectric power generation
    the production of electricity using a source of moving water 

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  18. intermediate load
    a demand for electricity that is greater than the base load and is met by burning coal and natural gas

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  19. peak load
    the greatest demand for electricity, which is met by using hydroelectric power and natural gas

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  20. renewable energy source
    a source of energy that can be replaced in a relatively brief period of time

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  21. non-renewable energy source
    a source of energy that cannot be replaced as quickly as it is used

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  22. solar energy
    energy that is directly converted from the energy of the sun into electricity

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  23. photovoltaic effect
    the generation of a direct current when certain materials are exposed to light

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  24. biomass energy
    A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms. Examples of thiscarbon fixation occur in plants and microalgae. These fuels are made by a biomass conversion (biomass refers to recently living organisms, most often referring to plants or plant-derived materials). This biomass can be converted to convenient energy containing substances in three different ways: thermal conversion, chemical conversion, and biochemical conversion

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Electricity glossary terms chapter 12 que cards
2013-11-04 23:21:38
science electricity

Electricity glossary terms chapter 12 que cards
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