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6-5 Energy

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