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8CK Elec & Magnetism
8th CK SCI Elecricity & Magnetism - COMPLETE
| Term | Definition |
|---|---|
| ampere(s) | Unit of current |
| attract | to pull to or toward oneself or itself (electron-proton interaction) |
| capacitor | a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator |
| circuit breaker | an automatic device for stopping the flow of current in an electric circuit as a safety measure |
| conductors | materials through which electrons move freely |
| current | the rate at which charge passes a given point. |
| electricity | electric charges that flow through a wire or similar material |
| fuse | a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level |
| ground | a direct electrical connection to the earth, a connection to a particular point in an electrical or electronic circuit, or an indirect connection that operates as the result of capacitance between wireless equipment and the earth or a large mass of conduc |
| insulators | materials through which charges of an electric current are not able to move freely |
| lightning rod | a pointed rod connected to the ground by a wire to provide an easy path for the electric charge to travel to the Earth and not cause damage to buildings. |
| closed circuit | .a complete electrical connection around which current flows or circulates. When you have a series of electrical wires connecting to each other and completing a circuit so that current travels from one end of the circle to the other, this is an example. |
| ohm(s) | Unit of resistance |
| open circuit | an electrical circuit that is not complete |
| opposite charge(s) | The electric fields tend to result in a repulsive force between particles with charges of the same sign, and an attractive force between charges of opposite sign. The electron is defined to have an electric charge of -1; the protons in an atomic nucleus h |
| electric power | the rate at which electrical energy is used to do work. |
| repel | to force away or apart (electron-electron, proton–proton interactions) |
| resistance | the opposition to the flow of electric charge. |
| short circuit | sudden surge in amperage due to the reduction of resistance in a circuit |
| static (charge/electricity) | the buildup of electric charges in an object |
| units | a quantity chosen as a standard in terms of which other quantities may be expressed |
| volt(s) | Unit of Voltage |
| watt(s) | Unit of power |
| Electric charge | a property of electrons and protons, electrons carry a negative charge and protons carry a positive charge |
| Magnetism | the force of attraction or repulsion of magnetic materials |
| Electric generator | a device that uses motion and converts it into electric current |
| Electric Current | the flow of electric charge through a material |
| Electromagnet | a strong magnet that can be turned on and off |
| Molten | melted especially by intense heat |
| Magnetic poles | the ends of a magnetic object, where the magnetic force is strongest |
| Van Allen Belts | two doughnut-shaped regions that contain electrons and protons traveling at very high speeds |
| Magnetosphere | the region of Earth’s magnetic field confined by solar wind |
| Navigation | method of determining position, course and distance traveled |
| Magnetic Compass | a device that has a magnetized needle that can spin freely, a compass needle always points north |
| Alternating current | current consisting of charges that move back and forth in a circuit |
| Step-up transformer | a transformer that increases voltage |
| Step-down transformer | a transformer that decreases voltage |
| Voltage | the difference in electrical potential between two places |
| Electrical potential | potential energy per unit of electric charge |
| Transformer | a device that increases or decreases voltage |
| Electric motor | a device that use electric current to produce motion |
Created by:
artisteacher
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