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Electricity & Magnet

Grade 5 Science

Atom The smallest particle of an element that can exist and still retain the properties of that element.
Battery holder A manufactured device which holds a battery.
Battery A device used for generating electricity through a electrochemical reaction; a battery unit is made from one or more cells.
Bond A force which joins atoms or groups of atoms together in a molecule.
Bulb holder A manufactured device which holds a bulb.
Cell Contains positive and negative electrodes surrounded by an electrolyte. A chemical reaction occurs within the cell which generates electricity (release electrons). One or more cells connected together is called a battery.
Charge A given quantity of electricity.
Circuit breaker A safety device used to prevent circuits in houses and buildihgs from being overloaded. A circuit breaker can be reset once it is tripped.
Circuit A complete path for an electric current.
Closed circuit Where the currect flows from the battery through an electrical device providing power, and returning back to the battery.
Compass An instrument with a rotating magnetic needle usually used for locating the Magnetic North Pole.
Conductor Anything an electrical current can pass through easily.
Contact points Places (on bells, bulbs and other electrical devices)where wires are connected to allow for the flow of electricity.
Control The switch that allows the flow of electricity.
Convert To change.
Current A flow of electricity.
Electrical device Anything that uses electricity or batteries.
Electricity A type of energy in which small particles (called electrons) move through a device.
Electrode Conductors through which current can flow.
Electrolyte Usually a liquid or paste that allows electrons to move easily through a cell.
Electron Part of an atom, a negatively charged particle that is found outside of the nucleus of the atom.
Energy The capacity for doing work; may be electrical, mechanical, chemical, thermal or nuclear.
Filament A very fine wire.
Friction Resistance between two surfaces moving against each other.
Fuse A safety device used in a circuit to prevent overloading. A thin piece of wire which will burn up if a large electric current goes through is causing an open circuit. A fuse must be replaced when it is blown.
Insulated wire Wire surrounded by plastic covering.
Insulator Materials that electricity has a hard time flowing through e.g. plastic coating on wires, leather, wood, etc.
Kilowatts A unit of electrical power equal to one thousand watts.
Load An electrical device.
Manufactured Man-made.
Natural Found in nature.
Negative charge Having more electrons than protons.
Negative terminal The point on the battery where electrons leave.
Neutron An uncharged particle in the nucleus of an atom.
Nichrome A type of wire; very resistant to current flow.
Non-renewable resource A natural resource that can not be replaced.
Nucleus Central part of an atom made of protons and neutrons.
Open circuit An incomplete path, electricity can not cross the break in the circuit.
Parallel circuit Provides more than one path for electricity to flow.
Positive charge A charged body having fewer electrons than protons.
Positive terminal The point on the battery where electrons enter.
Power A positively charged particle in the nucleus of an atom.
Renewable Can be replaced.
Resistance The opposition of a substance to the passage of electrical current; friction against electrons movingl.
Resistor An electrical component which slows electron flow.
Series circuit One path (loop) for electricity through all loads. If one bulb or battery is disconnected, the circuit will not work.
Simple circuit Consists of a battery (power source), wire (conductor), an electrical device (load), and switch (control) connected together to form a closed circuit.
Source The producer of power.
Switch A device used to control the flow of electricity.
Terminal The place which electricity enters or leaves an electrical component (battery).
Troubleshoot Sequential steps to detect and correct flaws to ensure success of a final product.
Tungsten A metallic element used in making electric light bulb filament.
Voltage A measure of the amount of electrical energy supplied to each charge.
Wattage Power expressed in watts.
Watt Unit used to measure power.
Created by: Huntermrsking