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6-5 Energy
| Question | Answer |
|---|---|
| Energy | The ability to cause changes in matter; involves either motion or position; can be in many different forms |
| Heat Energy | The energy of moving particles of matter (example: electrical and chemical energy can be used to produce heat) |
| Solar Energy | Energy from the Sun that provides light and heat for Earth; solar energy can be used to generate electricity |
| Chemical Energy | The energy stored in chemicals, fossil fuels, and substances that can burn |
| Electrical Energy | The energy flowing in an electric circuit (source: batteries, generators) |
| Mechanical Energy | The energy of moving objects (example: any moving object, falling water, moving machine parts) |
| Kinetic Energy | The energy something has because it is moving |
| Potential Energy | The energy something stores because of position or structure |
| Law of Conservation of Energy | The amount of energy you start with is the amount of energy you end with; the amount of energy always stays the same though its form may change |
| Magnetism | The force of attraction or repulsion of magnetic materials |
| Magnetic Field | The area surrounding a magnet that applies magnetic force |
| Electromagnet | A coil of wire that uses an electric current to make strong magnetic force |
| Generator | A machine that changes one form of energy to another, especially mechanical energy into electrical energy; produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet |
| Motor | A device that changes electrical energy into mechangical energy; contains an electromagnet |
| Electrical Circuit | The path through which electricity flows; electricity on a circuit can change to light, sound, heat, or motion by devices/loads added to the circuit |
| Conduction | The transfer of heat between objects that are touching, or from one part of an object to another |
| Convection | The transfer of heat that happens when the particles of a gas or liquid flow within the material itself |
| Radiation | The transfer of energy through space without any particles of matter touching or moving |
| Work | Occurs on an object when a force causes the object to move a distance; the object must move in response to the force |
| Machines | A device that makes work easier by reducing the amount of effort force or changing the direction in which the force is exerted |
| Effort Force | The force applied over a distance |
| Simple Machines | Any tool that is made up of only one or two parts |
| Lever | A simple machines made up of a rigid bar or board that is free to move around a fixed point called a fulcrum |
| Load | The weight or object that is moved using a simple machine |
| Fulcrum | The point at which a lever is supported |
| Effort Arm / Distance | The distance on a lever from the point at which the effort force is applied to the fulcrum |
| Pulley | A simple machine consisting of a rope that passes over a grooved wheel |
| Inclined Plane | A simple machine consisting of a slanted, flat surface |
| Complex Machine | A device that uses two or more simple machines, also known as a compound machine |
Created by:
eamcalister
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