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Electricity
Electrical, Magnetic, and Gravitational Forces
| Term | Definition |
|---|---|
| Element | A substance in which all of the atoms are identical. |
| Electron | The negatively charged part of an atom. |
| Electrical Charge | An electrical force within an atomic particle. |
| Electricity | The flow of electrons. |
| Static | Electrons that jump form object to object. |
| Magnetic Field (Shown as lines on diagrams.) | The force field created between the poles of a magnet. |
| Load | A device that does work in an electrical circuit. |
| Circuit | A path through which electricity travels. |
| Magnet | Magnets are rocks or metals that create an invisible field around themselves. |
| Generator | A device with magnets and coils of wire that produces electricity. |
| Battery | A device that produces electricity through a chemical reaction. |
| Repel | How like charges or magnetic poles respond. |
| Attract | How unlike charges or magnetic poles respond. |
| Mass | The amount of matter an item contains. Measured in Kilograms. STAYS THE SAME! |
| Weight | A force caused by gravity. Greater the mass, the greater the weight will be. Measured in Newtons. WEIGHT CAN CHANGE! |
| Gravity | Force that attracts objects towards each other. |
| When do gravitational forces increase? | When the masses are bigger and when the objects are closer. |
| What happens when a switch in a circuit is open? | The flow of electricity stops. |
| What happens when a switch in a circuit is closed? | There is a flow of electricity. |
| If you have an object that has a weight of 300 Newtons on earth, what will its weight be on the moon. | Moon = 1/6 the gravity on earth. 300 Newtons divided by 6 is 50 Newtons. |
| If you have an object that has a mass of 23 kilograms, what will its mass be on the moon. | Since mass stays the same, no matter where it is measured, it is 23 kilograms. |
| Which direction does a compass in always point? Why? | North. The north seeking pole of the compass is attracted to the north pole of earth. |
| Magnetism | The force of attraction or repulsion in and around a material. |
| Force | An interaction, that when unopposed, will change the motion of an object. |
| Friction | A force that works against motion. |
| Unbalanced Force | A force that produces a change in motion. |
| Newton | The standard unit of force. |
| Conductor | Material that allows electricity to flow through it. |
| Insulator | Material in which electric current does not flow freely. |