Science Glossary Terms Chapter 11

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Science Glossary Terms Chapter 11
2014-04-06 22:36:01
Science Electricity

Science glossary terms 11
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  1. Electric Circuit:
    • Is a closed path along electrons that can flow and are powered by an energy source.          
  2. Voltaic Cell:
    Is a source of energy that generates an electric current by chemical reactions involving two different metals separated by a solution that is a conductor.
  3. Battery:
    • Is a connection of 2 or more cells.
  4. Electrode:
    One or two  terminals in a cell or battery.
  5. Electrolyte:
    A solution or paste that conducts a charge.
  6. Dry Cell:
    A cell that contains an electrolyte that's a paste.
  7. Wet Cell:
    A cell that contains a liquid electrolyte.
  8. Primary Cell:
    A cell that can be used only once.
  9. Secondary Cell:
    A cell that can be recharged and reused.
  10. Fuel Cell:
    Is a cell that generates electricity through chemical reactions of fuel that's stored outside the cell.
  11. Solar Cell:
    A cell that converts sunlight into electrical energy.
  12. Terminal:
    A position on a cell that must be connected to other components to form a circuit.
  13. Switch:
    A controlled device that can complete or break the circuit that it's connected to.
  14. Open Circuit:
    A circuit that contains a gap or break.
  15. Electric Current:
    A measure of the number of charged particles that pass by a point in an electric circuit each second.
  16. Coulomb(C):
    Is the quantity of charge that's equal to the charge of 6.25 times 10 to the power of 18 electrons.
  17. Ampere(A):
    The unit of electric current, equivalent to 1 coulomb per second.
  18. Electrical Resistance:
    The property of a substance that hinders electric current and converts electrical renergy to other forms of energy.
  19. Resistor:
    A device used in an electric circuit to decrease the current through a component by a specific amount.
  20. Load:
    A resistor or any other device that transforms electrical energy into heat, light, motion, or sound.
  21. Potential difference (voltage):
    The difference between the electric potential energy per unit of charge at two points in a circuit.
  22. Volt:
    The unit for potential difference, equivalent to one joule(j) per coulomb(C).
  23. Circuit Diagram:
    A diagram that uses standard symbols to represent the components in an electric circuit and their connections.
  24. Series Circuit:
    A circuit where there's only one path which electrons can flow.
  25. Parallel Circuit:
    A circuit where there's more than one path along which electrons can flow.
  26. Ohm's Law:
    The ratio of potential difference to current is a constant called resistance.
  27. Ohm:
    The unit for resistance, equivalent to one volt per amp (A).
  28. Superconductor:
    A material through which electric charge can flow without resistance.
  29. Non-ohmic:
    Doesn't follow Ohm's law.
  30. Load in Series:
    The potential difference(V) between the terminals of a cell is the energy required(Joules(J)) to move one coulomb(C) of charge around the circuit.
  31. Load in Parallel:
    There's more than one path electrons can flow in.