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

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

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

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

  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

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

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

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

  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

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

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

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

  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

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

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

  16. base load
    the continuous minimum demand for electrical power

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

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

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

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

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

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

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

  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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