Question | Answer |
Magnet | An object that attracts anything made of iron, cobalt and nickel. |
Repel | To drive away or force backwards |
Attract | To cause to come near |
Magnetic Force | The force of attraction or repulsion between poles of a magnet |
Magnetic Field | The area around a magnet |
Magnetosphere | The earth’s magnetic field |
Electric Current | The flow of electrons |
Electromagnet | Is a temporary strong electrically charged magnet. When current is removed the electromagnet no longer attracts. |
Generator | Converts mechanical energy to electrical energy |
Motor | Converts electrical energy to create movement (mechanical energy) |
Amperes (Amps) | The measure of the flow of electrons |
Ammeter | The instrument that measures electrical current |
Voltage | Measures how much electric potential energy an electron can gain, the “push power” |
Battery | Converts chemical energy into electrical energy |
Resistance | Is the measurement of how difficult it is for electrons to flow through material |
Ohms | The unit of measurement for resistance |
Electron | The negatively charge part of an atom |
Conservation of Charge | Charges can be transferred but never created or destroyed |
Negative charge | A result of gaining electrons |
Positive charge | A result of losing electrons |
Neutral charge | Having equal number of electrons and protons |
Static Electricity | An imbalance of electrons on an object |
Electric Field | The area or field around a charge that causes other electric charges to be attracted or repelled |
Conductors | Material in which electrons are able to move through easily |
Insulators | Material in which electrons are NOT able to move through easily |
Static Discharge | Is the rapid movement of an excess charge from one place to another |
Grounding | Is the process of providing a pathway to drain the excess charge into the earth |
Series Circuit | Has only ONE PATH for electrical current to flow |
Parallel Circuit | Has more than one path for electrical current to flow |
Fuse | A mini circuit that contains a small piece of metal that melts if the current becomes too high. When the metal melts the circuit is broken, stopping the flow of current through the overloaded circuit. |
Breaker | contains a piece of metal that bends when the current in it is so large that it gets hot. The bending causes a switch to flip and open the circuit, stopping the flow of current. |
Electric Power | The rate at which an appliance converts electrical energy to another form of energy. |