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Published byPhebe Patterson Modified over 9 years ago
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Electric Forces
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Atoms Atoms have the following: – Neutrons (neutral charge) – Protons (positive charge) – Electrons (negative charge) Protons and electrons have an electric charge.
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Electric Charges (Forces) Electrons are located on the outer edges … which means they can be moved. If electrons are stripped away, the atom becomes positively charged. Static charge = an unbalanced negative or positive electric charge on an object
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The strength of the electric force between two charged objects depends on two variables: – The total amount of charge on both objects – Distance between the objects
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Electric field = the region surrounding a charged object Electric forces will attract (opposite charges) or repel (same charges) other charged objects.
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Insulators vs. Conductors Insulator = a material in which electrons cannot move easily. – Example: Glass, rubber, wood Conductor = a material in which electrons can move easily. – Example: Copper, aluminum
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Transferring Electrons (Electric Discharge) Contact – When objects made of different materials touch, electrons collect on one Conduction – When objects with unequal charges touch, electrons flow from the object with a greater concentration of negative charge. Induction – One object causes two other objects that are conductors to become charged without touching them.
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The process of an unbalanced electric charge becoming balanced is an electric discharge. Lightning is an electric discharge Grounding = providing a path for electric charges to flow safely into the ground.
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Learning Scale … I can 4 - Design a real world experiment that demonstrates how electric and/or magnetic forces affect objects. 3 - Investigate and describe different types of forces (including electric). 2 - Describe different types of forces (including electric). 1 - Recognize that a force is a push or pull.
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