Unit 4 electricity glossary terms.txt

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mikieo
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190781
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Unit 4 electricity glossary terms.txt
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2012-12-28 13:36:54
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Unit Electricity Glossary Terms
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Terms and Definitions
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  1. Electricity
    Electricity is the form of energy that results from the interaction of charged particles, such as electrons and protons.
  2. Static caharge(static electricity)
    An electric charge thta tends to stay on the surface of an object, rather than flowing away quickley.
  3. Charging by friction
    Charging by friction is the process in which objects made from different materials rub against each other, producing a net static charge on a object.
  4. Elecrostatic series
    A list of materials that have been aranged according to their ability to hold on to electrons.
  5. Insulator
    A material in which electrons cannot move easily from one atom to another. Ex:Wood
  6. Conductor
    A conductor is a material in which materials can move easily between atoms. Ex: Metal
  7. Semiconductor
    A material in which electrons can move fairley well between atoms.Ex: Silicon
  8. Ground
    An object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus nutralizing that object.
  9. Electroscope
    A device for detecting the presence of an electric charge.
  10. Charging by contact
    Generating a net charge on a neurtral object by touching it with a charged object.
  11. Laws of electric charges
    Laws that describe how two objects interact electically when one or both are charged.
  12. Electric field
    A property of space around a charged object, where the effect of its charge can be felt by other objects.
  13. Inducing charge seperation
    The movement of electrons in a substance, caused by the electric field of a nearby charged object that is not in direct contact with the substance.
  14. Ion
    A positively charged or negatively charged atom or group of atoms.
  15. Lightining rod
    A metal sphere or point that is attached to the highest part of a building and connected to the ground.
  16. Electrostaic precipitator
    A type of cleaner that can remove unwanted waste particles and liquid droplets from a flow of gas.
  17. Van de Graff generator
    A device that accumualates very large charges.
  18. Radiation dosimeter
    A small device that detects and measures exposer to radiation.

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