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Definition
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Term
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Definition
| to pull toward each other |
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Definition
| a source of stored chemical energy |
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Definition
| base the area on a lightbulb where one of the filament support wires extends down to the metal bead |
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Definition
| casing the inside of the metal screw case on a lightbulb where the second filament support wire connects |
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Definition
| a pathway for the flow of electricity |
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Term
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Definition
| circuit a complete circuit through which electricity flows |
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Definition
| a set of signals that represents letters or words for sending messages |
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Definition
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Definition
| the result of the light an object radiates or reflects |
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Definition
| an instrument that uses a free-rotating magnetic needle to show direction |
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Definition
| circuit a circuit with all the necessary connections |
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Definition
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Term
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Definition
| a substance, commonly a metal such as copper or aluminum, through which electricity will flow |
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Term
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Definition
| point the place in a circuit where connections are made to allow electricity to flow |
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Term
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Definition
| in an electromagnet, the material around which a coil of insulated wire is wound |
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Term
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Definition
| a source of electricity; also known as a battery |
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Term
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Definition
| neutral an object that has equal numbers of positive and negative charges |
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Term
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Definition
| current the flow of electricity through a conductor |
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Term
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Definition
| energy that flows through circuits and can produce heat, light, motion, and sound |
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Term
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Definition
| a piece of iron that becomes a temporary magnet when electricity flows through an insulated wire wrapped around it |
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Term
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Definition
| a property of electric and magnetic fields that causes interactions with electric charges and currents |
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Term
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Definition
| a tiny particle that has a negative charge and goes around the nucleus of an atom |
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Term
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Definition
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Term
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Definition
| source a place where energy comes from, such as batteries, food, fuels, and the Sun |
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Term
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Definition
| the material in a lightbulb |
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Definition
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Term
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Definition
| fuel the preserved remains of organisms that lived long ago and changed into oil, coal, and natural gas |
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Term
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Definition
| a source of energy when burned |
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Term
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Definition
| a device that produces electricity from motion |
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Term
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Definition
| a force that pulls objects toward each other |
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Term
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Definition
| observable evidence of energy |
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Term
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Definition
| circuit a circuit that has a break in it |
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Term
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Definition
| magnetism the influence of a magnetic field on a piece of iron, which makes the iron a temporary magnet |
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Term
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Definition
| a material that prevents the flow of electricity, commonly plastic, rubber, glass, or air |
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Term
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Definition
| to act on and be acted upon by one or more objects |
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Term
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Definition
| a metal that sticks to a magnet |
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Term
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Definition
| a switch that completes the circuit in a telegraph system |
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Term
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Definition
| observable evidence of energy |
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Term
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Definition
| a filament held by two stiff wires and surrounded by a clear glass globe |
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Term
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Definition
| source anything that makes light, such as the Sun, a lightbulb, or a flame |
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Term
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Definition
| an object that sticks to iron or steel |
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Term
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Definition
| field an invisible field around a magnet |
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Term
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Definition
| a property of certain kinds of materials that causes them to attract iron or steel |
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Term
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Definition
| a conductor for electricity |
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Term
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Definition
| a shiny surface that reflects light |
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Term
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Definition
| observable evidence of energy |
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Term
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Definition
| a device that produces motion from electricity |
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Definition
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Term
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Definition
| pole the end of a magnet that orients toward Earth’s magnetic north pole |
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Term
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Definition
| circuit an incomplete circuit through which electricity will not flow |
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Term
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Definition
| different as in the two poles of magnets |
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Term
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Definition
| to position an object in a certain way |
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Term
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Definition
| circuit a circuit that has two or more pathways for current to flow |
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Definition
| magnet an object that sticks to iron |
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Definition
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Term
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Definition
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Term
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Definition
| to make an educated guess based on data or previous experience |
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Definition
| a piece of transparent material that separates light into a spectrum |
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Term
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Definition
| something you can observe about an object or a material |
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Term
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Definition
| an electromagnetic wave of light |
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Term
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Definition
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Term
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Definition
| the bouncing of light rays off an object |
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Term
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Definition
| to change the speed and direction of travel |
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Term
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Definition
| the bending of light rays |
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Term
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Definition
| to push away from each other |
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Term
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Definition
| a piece of iron or steel around which a coil is wound |
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Term
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Definition
| circuit a circuit that has only one pathway for current to flow |
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Term
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Definition
| the dark area behind an object that blocks light |
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Term
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Definition
| the part of a motor that rotates when energy is present |
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Term
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Definition
| circuit an unintended pathway that allows current to flow from one terminal of an energy source directly to the other terminal without passing through any other component |
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Term
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Definition
| cell a silicon cell that converts sunlight into electric energy and is used as a power source |
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Term
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Definition
| observable evidence of energy |
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Term
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Definition
| pole the end of a magnet that orients toward Earth’s magnetic south pole |
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Term
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Definition
| electricity positive and negative electric charges that don’t move and are separated from each other |
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Term
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Definition
| a material made mostly of iron |
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Term
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Definition
| energy energy available for use |
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Term
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Definition
| a device used to open and close circuits |
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Term
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Definition
| a set of objects that are related in some way and can be isolated for study |
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Term
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Definition
| a device that uses an electromagnet to send coded messages by closing and opening an electric circuit |
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Term
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Definition
| magnet a piece of iron that behaves like a magnet only when it is surrounded by a magnetic field |
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Term
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Definition
| the term used to refer to the ends of a battery |
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Term
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Definition
| to move from one source to another |
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Definition
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Term
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Definition
| a quick back-and-forth movement |
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Definition
| light a mixture of all colors |
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Term
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Definition
| a metal or other solid substance through which electric current moves |
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