• # amp

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A unit of electric current is measured in amps (A).
• # Atom

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The smallest particle of an element.
• # Conductor

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A material that allows an electric current to flow through it.  Examples are penny, copper wire, paper clip and water.
• # Electric current

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A flow of electrons.
• # electricity

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Energy that is produced when electrons move from one place to another.
• # Electron

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A particle that has a negative charge and is found outside the nucleus of an atom.
• # Insulator

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A material that resists an electric current.  Examples are rubber, glass, cloth, and plastic.

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A device that pulls an electric current from a power source.  In a circuit, a load can be a light bulb or an alarm.
• # Open Circuit

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A path that has a break in it to stop electric current from flowing.
• # Open circuit/complete circuit

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An unbroken path that an electric current follows.
• # Parallel Circuit

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A circuit that divides the current between two or more loads before returning to the power source.
• # Series Circuit

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A circuit with two or more loads connected in a line.  Electric current flows from one load to the next.

• # 1st Law of Motion

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An object at rest wants to stay at rest.  An object in motion wants to stay in motion.
• # Acceleration

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A change in an object's speed or direction
• # Force

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A push or pull
• # Friction

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A force that slows motion and is caused by two things rubbing together.
• # Inertia

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The tendency of an object to keep doing whatever it's already doing.
• # Isaac Newton

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An English scientist and mathematician.  He discovered the three laws of motion and had ideas about how gravity works.
• # Mass

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The amount of matter of stuff that an object is made of.  Mass is measured in grams (g).  Mass is measured with a Balance.
• # Motion

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The act of moving, or a change in position.
• # Speed

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The distance traveled by an object over a given time period.