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Magnets A magnet is an object that sticks to iron. A magnet is an object that sticks to iron. Force A force is a push or a pull. Attract Repel • When magnets pull • When magnets together, we say push apart, we say they attract. they repel. Temporary Induced • A piece of iron that • Induced behaves like a magnetism is the magnet when it is influence of a touching a permanent permanent magnet magnet’s magnetic is a temporary field on a piece of magnet. iron, which makes the iron act like a magnet. Graph • A graph organizes data visually to show a relationship between two things. • The intersection of two lines is the point at which they cross. Prediction A prediction is an educated guess based on data or previous experience. Detector • A detector is something you use to gather evidence about something you can’t see. D-cell • The D-cell is the source of electricity. • A battery refers to more than one cell, but most people use the words battery and D- cell interchangeably. • An electricity source provides the energy to light the bulb. Electricity Receiver • An electricity receiver is a component that uses the electricity from the source to make something happen. Circuit • A circuit is a pathway for the flow of electricity. Components • D-cells, bulbs, and wires are circuit components. Schematic Diagram • A schematic diagram is a way to represent a circuit on a piece of paper. Filament • The filament of a bulb is the part that gets hot and produces light. Circuit Base • A circuit base holds components needed to build a circuit. Fahnstock Clip • A Fahnstock clip or metal clip that connects wires in a circuit. Switch • A Switch is a device used to open and close circuits. Open Circuit Closed Circuit • An open circuit is An closed circuit is a an incomplete complete circuit through circuit through which electricity flows. which electricity will not flow. Conductor Insulator • A conductor is a • An insulator is a material that prevents substance, the flow of electricity, commonly a metal commonly plastic, such as copper or rubber, glass, or air. aluminum, through which electricity will flow. Series Circuit • A circuit with only one pathway for current flow is a series circuit. Parallel Circuit • A parallel circuit splits into two or more pathways before coming together at the battery. Electromagnet • An electromagnet is a coil of wire, usually wound around a core of iron steel, which produces a magnetic field when electricity flows through the wire. Core Coil • The core is the • A coil is wire material around wound repeatedly which a coil is around a central wound. core Technology • Technology applies the results of scientific research. Telegraph • A telegraph is a device for sending coded messages by signals produced by closing and opening an electric circuit. • A telegraph key is a switch that completes the circuit in a telegraph system. • The gap is the space between the steel strip and the electromagnet. • A code is a set of signals that represents letters or words for sending messages. Long-Distance • Long-Distance refers to something that is far away.
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