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Unit 3 Vocabulary
Term | Definition |
---|---|
electric charge | A property that leads to electromagnetic interactions between the particles that make up matter. |
static electricity | The build up of electric charge on an object. |
electrical conductor | A material through which charges can move freely. |
electrical insulator | A material through which charges cannot move easily. |
semiconductors | A special class of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors. |
Electric current | The rate of flow of electric charges. |
voltage | The amount of work required to move each unit of charge between two points. |
resistance | The opposition to the flow of electric charge. |
electric circuit | A complete,closed path through which electric charges can flow. |
series circuit | All parts are connected in a row that forms one path for the electric charges to follow. |
parallel circuit | Electric charges have more than one path that they can follow. |
magnet | Any material that attracts iron or any object made of iron. |
magnetic force | When a magnet exerts a push or a pull on each other. |
magnetic poles | Two magnets that can push each other apart because of their ends. |
magnetic field | The area surrounding a magnet where magnetic forces can be detected. |
electromagnetism | Happens when electric currents and magnetic fields interact with each other. |
solenoid | A coil of wire that carries an electric currant, and therefore produces a magnetic field. |
electromagnet | Wrapping a solenoid around an iron core makes this. |
electric motor | Changes electrical energy into mechanical energy. |
electromagnetic induction | Uses a magnetic field to create an electric current in a wire. |
transformer | Uses induction to increase or decrease the voltage of alternating current. |
electric generator | Uses induction to to change mechanical energy into electrical energy. |
electronic device | Able to control the flow of electrons using integrated circuits. |
integrated circuit | A single, tiny chip of specially treated silicon containing many circuit parts. |
analog signal | Signals that can change continuously in a given range. |
digital signal | A sequence of separate values. |
computer | Any electronic device that performs tasks by following instructions given to it. |