Science Glossary Terms

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  1. Direct Current (DC)
    The current in which charged particles travel through a circuit in one direction.
  2. Alternating Current (AC)
    The current in which electrons move back and forth.
  3. Transformer
    • An electrical device that changes the size of the potential difference (V) of an alternating current.
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  4. Circuit Breaker
    • A safety device that's placed in series with other circuits that lead to appliances and outlets
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  5. Fuse
    • A safety device that's found in older buildings and some appliances. Placed in Series with other circuits that lead to appliances and outlets.
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  6. Electrical Power
    Is the rate at which an appliance uses electrical energy.
  7. Watt (W)
    A unit of electrical power. 1W=0.001kW
  8. Kilowatt (kW)
    A unit of electrical power. 1kW=1000W
  9. Electrical Energy
    The energy that's used by an appliance at a given setting. Determined by multiplying power rating by the amount of time used.
  10. Kilowatt-hour (kW∙h)
    The unit of electrical energy.
  11. EnerGuide label
    • 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 by hour and sends the information to the utility company immediately.
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  13. Time of use pricing
    A system of pricing in which the cost of each kW times hours of energy is used differently at different times of day.
  14. Phantom Load
    The electricity that's consumed by an appliance or device when it's 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.
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  18. Intermediate Load
    A demand for electricity that's greater than the base load and is met with burning coal and natural gas.
  19. Peak Load
    The greatest demand for electricity. Met by using hydroelectric power and natural gas.
  20. Renewable Energy Source
    A source of energy that can be replaced in a small amount of time.
  21. Non-Renewable Energy Source
    A source of energy that can't be replaced as quickly as its used.
  22. Solar energy
    Energy that's 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
    Electrical energy converted from animal and plant matter.
Card Set:
Science Glossary Terms
2014-04-15 00:53:42

Chapter 12 glossary terms
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