BC Science 9 Chapter 8

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34 cards   |   Total Attempts: 182
  

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Cards In This Set

Front Back
Electric potential energy
Electric energy stored in a battery
Electrochemical cells
Used to convert chemical energy in to electrical enery stored in charges (commonly called cells or batteries)
Electrodes
The two terminals on a battery
Electrolyte
Substance that conducts electricity, electrodes are in electrolyte
Energy
Ability to do work
Potential difference/voltage
Amount of electric potential energy per one coulomb of charge
Volt
Unit for measuring potential difference
Battery
Combination of electrochemical cells connected together
Terminals
End points on the battery where we make a connection
Kinetic energy
Energy a moving object has because of its motion
Potential energy
Energy stored in an object
Voltmeter
Device that measures the amount of potential difference between two locations of charge separation
Friction
-rubbing to materials together- can separate charge-separated charges not have electrical energy
Piezoelectric crystals
Crystals are squeezed, + and - charges are separated on either side f the crystal, a small hammer hits the crystal, generating a bust of thousands of volts of electricity
Photo-electrochemical cells
Solar panels + calculators- made of semi-conducting material such as silicon- light hits the cell,some of the light energy breaks electrons off the surface of the cell-separated electrons now have the electrical energy needed to operate