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| Electronic device that allows current to flow in only one direction |
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| Pressure behind the flow of electrons in a circuit |
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| Electricity can go straight through and back to the source- Short cut |
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| Closed loop of conductors through which old charges can flow |
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| The positive (+) and negative (-) markings on a battery |
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| Device for producing electrical current by moving a coil of wire in a magnetic field |
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| The electrical friction between an electric current and the material it is flowing through |
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| A variation in air pressure created by a mechanical vibration *Sound travels in waves |
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| The unit of measure for resistance |
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| A drawing of an electrical circuit that uses symbols for all the components |
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| Circuit in which the currents are divided into two or more paths and then returns via a common path to complete the circuit |
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| Circuit connected so that current passes through each circuit element in turn without branching out. If there are two bulbs, and you remove one, the other won't work |
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| A machine that converts electrical energy into mechanical energy |
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| A special wire that breaks when too much current flows through it |
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| Components used to control the flow of electricity such as a lamp or a motor |
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| A device which converts electrical energy into sound |
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| A one way, low-current meter. More sensitive than regular light bulbs |
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| Electronic parts made with light-sensitive materials that change their resistance when light shines on them. Their resistance decreases as the light becomes brighter |
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| Creates an electrical charge across wires by using a chemical reaction. Top: Cathode Bottom: Anode |
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| Usually made of metals such as copper that offer very low resistance to the flow of electricity |
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| Device to connect or disconnect wires in an electric circuit |
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| Components and wires in electrical devices are mounted to circuit boards |
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| Lamp that creates light using a material that is heated until it glows |
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| Creates light using glowing gas |
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| Saves energy and money. Drawback- disposal of mercury gas inside |
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| Electricity that is produced by rubbing two objects together- transfer of electrons |
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