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Organic matter, such as food or agricultural waste, used as an energy source

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Is the harmful release of heated liquid into a body of eater or heat released into the air as a waste product of a business

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Based on the conversion of sunlight int o electricity.

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Form of hydropower that converts energy obtained from tides into useful forms of power

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The conversion of thermal energy into electrical energy. Relies on a fuel source to heat a fluid to drive a turbine

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Is a plant that produces electricity by using water to propel the turbines. These stations generate about a quarter of all electricity

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Gases in Earths atmosphere that trap the heat that forms when radiant energy from the sun reaches earths surface

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Energy of charged particles; transferred when electrons travel from place to place

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Energy which a body possesses by virtue of being in motion

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Energy that cannot be replaced by natural means on a level to its consumption such as fossil fuels, oil, natural gas and coal

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Energy from a source that is not depleted when used such as wind or solar power

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Ratio of the useful energy output to the total energy input in a device or system; usually given as a percent

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Ability to do work

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Rate at which a device converts energy

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Device usually with three layers arranged such that a small voltage through the middle layer controls a current between the outer layers, allowing the device to act as a switch or amplifier

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Special wire that heats up and turns off switch when excess current flows through an electrical circuit

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Device that changes electricity at one voltage into electricity at a different voltage; a step- up transformer increases the voltage; a step-down transformer decreases the voltage

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Rotating shaft and coil in a motor or generator

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A magnet that retains its magnetic properties in the absence of an inducing field or current

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Mechanism that makes electrical contact with the moving commutator in a motor

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Split ring in a motor that breaks the flow of electricity for a moment and then reverses the connection of the coil

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A machine powered by electricity or internal combustion that supplies power

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Is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit

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Coil of insulated wire (usually wrapped around a soft iron core) that becomes a magnet when current flows through

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Rechargeable cell

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Cell that produces electricity by means of a chemical reaction that cannot be reversed

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Cell that has its electrolyte in the form of a paste, usually in a sealed case; the type of cell commonly used in portable devices such as flashlights

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Electrochemical primary cell having liquid electrolyte

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Conductor through which electric current enters or leaves a device or material

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Liquid or paste that conducts electricity because it contains ions

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Package if chemicals designed to produce small amounts of electricity; produces electricity from chemical reactions

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Solid-state electronic components, low when electricity flow through them. ex) LED's light emitting

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Incandescent lightbulbs. Filament made of high resistance medals that glow brightly when current passes through it. ex) incandescent light bulbs

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Crystal pulls or compresses a potential difference builds up on the opposite side of the crystal. Conductors are attached to the crystal and it creates a circuit. ex) piezoelectric effect in reverse

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Quartz or crystal is connected to an electric current and will expand or contact. The crystal can create a wave or vibration if it experiences pressure. ex) piezoelectric effect

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(Thermocouple) two 'junctions' of loops of different types of metals. As the temperature difference increases the current increases

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Very common in everyday life. ex) toaster

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The ability to do work. Energy transformation. Converting one form of energy to another form of energy

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The components of the circuits are connected so that there is more than one path for electrons to flow

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The components of the circuits are connected end-to-end in a line to form a single path for electrons to flow.

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Variable resistors do not have a fixed resistance, instead their resistance changes in response to temperature, light and voltage

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In the circuit if the voltage remains constant and current increases, then the resistance decreases. IN a circuit if the voltage remains constant and the current decreases, then the resistance increases. ex) R=V (over) I

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The electrical quantity that measure how the device reduces the electrical current through it. ex) measured in (R) Ohms

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You can measure the voltage in a circuit using a voltmeter. It measures the voltage between two points in the circuit.

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Voltage is the energy for pushing electrons. Chemical reactions separate the negative and positive charges and electrons will accumulate at one terminal (negative) the other end will be positive. ex) measured in volts (V).

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An ammeter measures large currents and can be connected as a part of the circuit.

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Current is the movement of electrons or the amount of charge passing a point in a conducting wire every second. ex) measured in the units of amperes (A)

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Switch to stop and start the flow of electricity. ex) switch

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The load, converts electricity into another form. ex) lightbulb

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Path in which electrons from a voltage can flow. The point where they enter the circuit is called the point of electrons. ex) battery

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Complete course of conductors in which a current can flow. To be a current the starting and ending place must be the same. ex) wiring in a house

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Connecting an object to the earth to safely neutralize an object

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Release of electricity through a medium such as gas

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Little or no resistance to charge movement. Materials become a superconductor when they are set as very low temperatures. They are super efficient and can take up higher charges. ex) high voltage power lines

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These are better conductors then insulators but not as good as conductors. ex) silicone

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Objects where electrons do not move freely. Electrons stay where they are placed. ex) rubber

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Objects where electrons move freely. Electrons will distribute evenly. ex) copper

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Describes the behaviour between charges and uncharged objects.
1) Unlike charges attract
2) Like charges attract
3) Charged objects attract neutral

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Static electricity is due to the unbalance between positive and negative charges. The charges are stationary and thus making static electricity. ex) lighting