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Physics
Key Terms and eview
| Question | Answer |
|---|---|
| Eletricity | A form of energy that results from the interaction of changed particles,such as electrons or protons. |
| Static Charge(Static Eletricity) | An electric charge that tends to stay on the surfaceof an object,rather that flowing away quickly. |
| Charging by Friction | A process in which objects made from different materials rub against each other,producing a net static charge on each. |
| Electrostatic Series | A list of meterials that have been arranged according to their ability to hold on to electrons. |
| Insulator | A material in which electrons cannot move easily from one atom to another. |
| Conductor | A material in which electrons can move easily between atoms. |
| Semiconductor | A material in which electrons can move fairly well between atoms. |
| Ground | An object that can supply a very large number of electronsto,or can remove a very large number of electronsfrom,a charged object,thus neutrilising the object. |
| Electric circuit | a closed path along which electrons are powered by an energy source can flow |
| battery | a connection of two or more cells |
| dry cell | a cell that contains an electrolyte that is a paste |
| switch | a control device that can complete or break the circuit to which it is connected |
| open circuit | a circuit that contains a gap or break |
| terminal | location on a cell that must be connected to other components to form a circuit |
| electric current | the rate of movement of electrical charge |
| resistor | a device used in an electrical circuit to decreace the current through a component by a specific amount |
| load | a resistor or any other device that transforms electrical energy into heat,motion,soung or light |
| volt | the unit for potential difference |
| parallel circuit | a circuit in which there is more than one path along which electrons can flow |
| series circuit | a circuit in which there is only one path along which electrons can flow |
| Voltage cell | A source of energy that generates an electric current by chemical reaction involving two different metals or metal compounds separated by a solution that is a conductor. |
| battery | A connection of two or more cells |
| electrode | One of two metal terminals in a cell or battery |
| electrolyte | A solution or paste that conducts charge |
| dry cell | A cell that contains an electrolyte that is a paste |
| wet cell | A cell that contains a liquid electrolyte |
| primary cell | A cell that can be used only once |
| secondary cell | A cell that can be recharged |
| fuel cell | A cell that generates energy through the chemical reactions of fuel that is stored outside the cell. |
Created by:
xander_g
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