Unit 1: Electricity and Magnetism: Task 2 (Flashcards)

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Friction

Back

The force that exists when one surface is rubbed against another surface.

A smooth surface has less frictional force. A bumpy/rough surface has more frictional force.

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Electric Charge

Back

A property of a particle by which it may repel or attract other particles. Electric charge can be positive or negative and is carried by subatomic particles such as protons and electrons.

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Proton

Back

A subatomic particle found in the nucleus of every atom. It carries a positive electric charge.

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Electron

Back

A subatomic particle with a negative electric charge, found in all atoms and acting as the primary carrier of electricity in solids.

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Attract

Back

The action of drawing objects together. In terms of electric charges, opposite charges attract each other.

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Repel

Back

The action of pushing objects away from each other. In terms of electric charges, like charges repel each other.

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Electric Conductor

Back

A material that allows the flow of electric charge (electricity) in one or more directions. Metals like copper and aluminum are good conductors.

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Electric Insulator

Back

A material that resists the flow of electric charge. Insulators are used to protect us from the dangerous effects of electricity flowing through conductors.

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Electrostatic Force

Back

The force of attraction (Pull) or repulsion (Push) between two charged objects. It is a non-contact force that acts over a distance.

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Electric Field

Back

A field around a charged particle that exerts a force on other charged particles.