Science Unit 11 Glossary Terms

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yugantpatel
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286821
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Science Unit 11 Glossary Terms
Updated:
2014-10-23 18:07:18
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Science Glossary Terms Ms Day
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Science Unit 11 Glossary Terms
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  1. Electric Circuit
    • A closed path along which electrons that are powered by an energy source can flow
    • e.g. A light bulb powering with no problems
  2. Voltaic Cell
    • A source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds separated by a conducting solution
    • e.g. Voltaic pile
  3. Battery
    • A connection of two or more cells
    • e.g. Duracell batteries
  4. Electrode
    • One of two metal terminals in a cell or a battery
    • e.g. Flat vs bumpy ends on a AA battery
  5. Electrolyte
    • A solution or paste that conducts charge
    • e.g. Inside of AA battery
  6. Dry Cell
    • A cell that contains an electrolyte made of a paste
    • e.g. Normal AA batteries
  7. Wet Cell
    • A cell that contains a liquid electrolyte
    • e.g. Some car batteries are wet cells
  8. Primary Cell
    • A cell that can only be used once
    • e.g. Normal batteries
  9. Secondary Cell
    • A cell that can be recharged
    • e.g. Rechargeable batteries
  10. Fuel Cell
    • A cell that generates electricity through the chemical reactions of fuel that is stored outside of the cell
    • e.g. Hydrogen Fuel Cell
  11. Solar Cell
    • A cell that converts solar energy into electrical energy
    • e.g. Solar Panels
  12. Terminal
    • A position on a cell that must be connected to other components to form a circuit
    • e.g. Negative and Positive terminals on a car battery
  13. Switch
    • A control device that can complete or break the circuit to which it is connected
    • e.g. Light switches
  14. Open Circuit
    • A circuit that contains a gap or break
    • e.g. When nothing works due to a wire not connected properly
  15. Electric Current
    • A measure of the number of charged particles that pass by a point in an electric circuit each second
    • e.g. Electricity going through a motherboard
  16. Coulomb (C)
    • The quantity of charge that is equal to the charge of 6.25 x 1018 
    • e.g. 1 coulomb per second = 1 amp
  17. Ampere (A)
    • The unit of electric current, equivalent to one coulomb per second
    • e.g. 10 Amp phone batteries
  18. Electrical Resistance
    • The property of a substance that hinders electric current and converts electrical energy to other forms of energy
    • e.g. Light bulbs
  19. Resistor
    • A device used in an electric circuit to decrease the current through a component by a specific amount
    • e.g. 25 ohm resistor (Light Bulb)
  20. Load
    • A resistor or any other device that transforms electrical energy into heat, motion, sound, or light
    • e.g. Using a load to heat up a oven
  21. Potential Difference (Voltage)
    • The difference between the electric potential energy per unit of charge at two points in a circuit
    • e.g. The potential difference between 2 cells
  22. Volt
    • The unit for potential difference; equivalent to one joule (J) per coulomb (C)
    • e.g. 1.5 Volt battery
  23. Circuit Diagram
    • A diagram that uses standard symbols to represent the components in an electric circuit and their connections
    • e.g. A circuit diagram with a lamp a switch a resistor and a battery
  24. Series Circuit
    • A circuit in which there is only one path along which electrons can flow
    • e.g. Series Christmas Lights
  25. Parallel Circuit
    • A circuit in which there is more than one path along which electrons can flow
    • e.g. Two light bulbs being powered by one battery
  26. Ohm's Law
    • The ratio of potential difference to current is a constant called resistance
    • e.g. V = IR
  27. Ohm (Ω)
    • The unit for resistance, equivalent to one volt per ampere
    • e.g. 25 ohm's resistance
  28. Superconductor
    • A material through which electric charge can flow with no resistance
    • e.g. Magnet at CERN
  29. Non-ohmic
    • Not following Ohm's law
    • e.g. Magnet at CERN
  30. Loads in Series
    • Loads in a series circuit
    • e.g. A lamp
  31. Loads in Parallel
    • Loads in a parallel circuit
    • e.g. Light bulbs

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