Science- Unit 2 Electricity chapter 10

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  1. Electricity
    a form of energy that results from the interaction of charged paticles, such as electrons or protons (10.1)
  2. Static charge (static electricity)
    an electric charge that tends to stay on the surface of an object rather than flowing away quickly (10.1)
  3. Charging by friction
    a process in which objects made from differen materials rub against each other, producting a net static charge on each object (10.1)
  4. Electrostatic series
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    • a list of materials that have been arranged according to their ability to hold on to electrons (10.1)
  5. Insulator
    a material in which electrons cannot move easily from one atom to another (10.1)
  6. Conductor
    a material in which electrons can move easily between atoms (10.1)
  7. Semiconductor
    a material in which electrons can move fairly well between atoms (10.1)
  8. Ground
    an object that can supply a very large number of electrons to, or can remove a very large number of electons from, a charged object, thus neutrilizing the object
  9. electroscope
    a device for detecting the presence of an electric charge (10.2)
  10. charging by contact
    generating a charge on a neutral object by touching it with a charged object (10.2)
  11. laws of electric charges
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    • laws that describe how two objects interact electrically when one or both are charged (10.2)
  12. Electric field
    a property of the space around a charged object, where the effect of its charge can be felt by other objects (10.2)
  13. Induced charge separation
    the movement of electrons in a substance, caused by the electric field of a nearby charged object, without direct contact between the substance and the object (10.2)
  14. ion
    a charged atom or group of atoms (10.3)
  15. lightning rod
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    • a metal sphere or point attached to the highest part of a building and connected to the ground (10.3)
  16. electrostatic precipitator
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    • a type of cleaner that removes unwanted particles and liquid droplets from a flow of gas (10.3)
  17. Van de Graaff generator
    a device that accumulates very large charges (10.3)
  18. radiation dosimeter
    a small devic that detects and measures exposure to radiation (10.3)
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Science- Unit 2 Electricity chapter 10
2014-03-25 01:58:17
Science Electricity grade

Grade 9 Unit 2 Electricity chapter 10
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