glossary terms

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glossary terms
2014-10-13 21:27:35
electicity terms electricityterms

glossary terms for chapter 10, 11, and 12
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  1. Electricity
    • - a form of energy that is a result of chargedparticles either negativley charged particles (more electrons within the substance) or positively charged particles (more protons within the substance)
    • -can form as static electricity that is an accumulation of charge or dynamically as an electrical current
  2. static electricity
    • - a form of electric energy that is static/stationary¬†
    • -static electricity forms when a charge accumulates on an objects serface
  3. charging by friction
    -when two or more objects are rubbed together electrons move from one object to the other causing an inbalance in charges
  4. electrostatic series
    - a table that shows the strength of a substances attraction to electrons going from weakest at the top to strongest at the bottom
  5. insolator
    -a substance in which electrons are not allowed to move from atom to atom with ease
  6. conductor
    - a substance in which electrons can move freely from atom to atom without difficulty
  7. semiconductor
    - a material that has the conductivity level between that of a conductor and an insolator
  8. Ground
    • - to connect an electrically charged object or substance to the ground to neutrelize the charge of the object or substance
    • - that is why most electrical appliances have a third metal prong on on the bottom, so that it is close to the ground so that if there is anything that happens the excess charge will go to the ground
  9. Elecroscope
    - a device used to determine the strength and charge of one object compared to another
  10. Charging by Contact
    • - when a negativley charged object touches a neutral object electrons from the charged object move from the charged object to the neutral object giving the neutral object a negative charge
    • -the object that was originally negative although it does lose some electrons it usually remains negativley charged and the most it can change is to become neutral the object can never become positivley charged
  11. Laws of Electric Charge
    • unlike charges attract and similar charges repulse, neutral charges attract to all other charges
    • .
  12. Elecrtic feild
    • - a feild of energy around a charged atom that either pushes or pulls toward the atom
  13. Induced Charge Separation
    • - occurs when a charged object comes close enought to a neutral object that it repels the electrons within that object creating a positive charge on the side of the otherwise neutral object that is closer to the negetivley charged object
  14. Ion
    - an atom or molecule with a net negative charge
  15. Lightning Rod
    • - a tall metal rod with or without a ball at its top that is installed at the highest point of a building and is connected to the ground to absorb lightning that would otherwise hit the building¬†
    • - this works because electrons always take the path of least resistance, because the lighting rod is at the highest point of a building it is the closest to the cloud therefore the path of least resistance
  16. Elecrostatic Precipitator
    -filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge
  17. Van de Graaff Generator
    - an electrostatic charge generator that can produce large amounts of static charge
  18. Radiation Dosimeter
    -a device that measures the exposure of radiation on an object