Electricity
Essential vocabulary for lesson on electricity
Terms
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- Ampere
- the basic unit of electric current in the international system of measurement
- Attraction
- the force between oppositely charged substances
- Electron
- the negative subatomic particles orbiting the nucleus of atoms
- Friction
- a force that opposes motion between two surfaces that are touching
- Repulsion
- the force with which like charges push each other away
- Static
- the buildup of electric charges on an object
- Induction
- charging an uncharged object by rearranging electrons without direct contact with any charged object
- Rule of charge
- negative particles attract positive particles and repell other negative particles
- Electricitiy
- a fundamental form of energy that occurs in positive and negative forms and is expressed in movement of electrons
- Current
- a contnuous flow of charge caused by the motion of electrons
- Discharge
- the loss of electricity as charges move off an object
- Voltage
- the difference in energy per unit charge as a charge moves between two points
- Electroscope
- instruments used to determine the presence of a charge on an object