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Phys Sci 6/7 Test
| Term | Definition |
|---|---|
| Matter is composed of | atoms (Protons, Neutrons, & Electrons) |
| Charging by contact | Transferring charges by touching or rubbing |
| Charging by induction | When electrons on a neutral object are moved by a charged object |
| Free movement of electrons | Electricity |
| Law of conservation of energy | Energy cannot be created or destroyed but can be changed |
| Static electricity | the net accumulation of electric charges on an object & can be transffered |
| Electric Field | force exerted by an e- on anything that has an electric charge |
| Conductor | Materials that allow the easy flow of electrons |
| Insulator | Materials that do not allow the easy flow of electrons |
| Good examples of a conductor | Diamonds & Water |
| Parallel Circuit | The circuit that provides electricity to houses |
| Electricity | Protons and neutrons repeling eachother |
| Thunder | A sound wave created by the rapid explosion of air caused by lightining |
| Lightning | A giant spark of electricity in the atmosphere |
| Generator | Changes mechanical energy into electrical energy |
| Electric motor | A machine that changes electrical energy into mechanical energy |
| Complex circuit | Circuits with some segments being in series and other segment being in parallel to take advantage of the benefits of both |
| 4 metals that are good for a circuit | Copper, Gold, Silver, & Aluminum |
| Transformer | A device that increases or decreases the voltage of an alternating current |
| Short circuit | A circuit which contains little to no resistance |
| Opposite | Attracts |
| Like | Repels |
| Warm air | is less dense and floats |
| Cold air | is more dense and sinks |
| Jefferson believed in direct current which is | used for lower powered things |
| Nicola Tesla believed in alternating currents which is | used for higher powered things |
| Electrons can only | flow through conductors |
| Static Dishcharge | A transfer between two objects because of a build up of static electricity |
| Electroscope | Instrument that detects the presence of elctrical charges |
| Electromagnetic Induction | The making of a current by changing a magnetic field |
| Thermal power plants are | The main producers of electricity |
| Mechanicl energy | Movement energy in the form of machines |
| Direct Current | One way current |
| Alternating Current | Using multiple currents |
| Electric Circuit | A closed path that electric current follows |
| Electric Current | The rate atr which electric charges move in one direction past one point |
| OHMs Law | The current in a circuit equals the voltage difference divided by the resistance |
| Resistance | The tendency of a material to oppose the flow of electrons changing electric energy into heat and light |
| Voltage Difference | Something related to the force that makes electric charges flow |
| Electric Power | The rate at which electric energy is changed into another form of energy |
| Parallel Circuit | A circuit with at least two paths for a current to move through |
| Series Circuit | A circuit with just one loop for a current to move through |
Created by:
leii