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Static Electricity Review
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Which part of the atom can move from one atom to another?
+ – Proton (positive charge) + neutron (neutral) electron (negative charge) – atom nucleus
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Which part of the atom can move from one atom to another?
The electron + – + electron (negative charge) – atom nucleus
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What happens to make an object have a negative charge?
If electrons > protons negative charge (gains electrons)
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What happens to make an object have a positive charge?
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If electrons < protons positive charge (lost electrons)
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What are 3 ways to transfer electric charge
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3 ways to transfer electric charge
Conduction Induction Friction
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Type of Electron Transfer when Objects make Contact
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Conduction Excess electrons pass to a neutral object when touched
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Type of Electron Transfer when Electrons move from a distance without contact
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Induction Electrons transferred when a neutral object is near a charged object (in the electric field)
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Type of Electron Transfer when Electrons are moved by force
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Friction moving electrons by force
Type of Electron Transfer when Electrons are moved by force
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What are Insulators?
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Insulators Insulators: materials that do NOT allow electrons to flow through them easily. Insulators can be easily charged by friction as the extra electrons gained CANNOT easily escape.
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Examples of Insulators?
Insulators: materials that do NOT allow electrons to flow through them easily.
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Conductors and Insulators
Copper Rubber Aluminum Cloth Humans Hair Water Plastic Most metals Glass Paper
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Which of these materials allow electrons to flow through them?
Conductors Insulators Copper Rubber Aluminum Cloth Humans Hair Water Plastic Most metals Glass Paper
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Which of these materials will build up static electricity?
Conductors Insulators Copper Rubber Aluminum Cloth Humans Hair Water Plastic Most metals Glass Paper
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What is the difference between insulators and conductors?
Copper Rubber Aluminum Cloth Humans Hair Water Plastic Most metals Glass Paper
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What do the built up electrons create around the charged object?
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What do the built up electrons create around the charged object?
An electric field
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What will happen?
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What will happen? X will repel like charges repel
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What will happen? Y will attract in a neutral object like charges repel and the opposites attract
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What will happen? Z will attract opposites attract
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What will happen to the man?
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How does the man get positively charged?
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How does the man get positively charged?
He gets charged by friction
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Why does the man get zapped?
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Why does the man get zapped?
He is positively charged and the electrons jump to him during electric discharge
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Why are many electrical objects grounded?
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Why are many electrical objects grounded?
So extra electrons go to the ground and do not build up on materials to shock people
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Maybe the caravan was struck by lightning.
The van and the balloon have opposite charges so they stick together. The man is charged and has a lot of negative charges.
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Why is her hair standing up?
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Electric Discharge
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