Download - Basic Electricity 4th grade level
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4Th grade level
Basic
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Electrical Circuits
• Conductors are things that allow heat and electricity to easily pass through them.
• Insulators are things that do not allow heat and electricity to easily pass through them.
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• Electricity is the presence or movement of electrons, which are tiny, negatively charged particles that orbit an atom’s nucleus.
• Electricity is what we get when electrons move from one place to another.
Electricity
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Where Is Electricity
• Electricity is present in lightning and in power grids.
• When you plug an appliance into the wall, electricity moves from a reserve in the wall to the appliance, which makes it run.
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Static Electricity
• When you get an electric shock, that is static electricity.
• During static electricity electrons are moving from you to, say, a metal doorknob when you touch it. It can also happen when you quickly take off a sweater.
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Electricity Cannot Flow Without
1. A power supply (like the mains or a battery)2. A closed circuit to travel around
Note: If you remove the battery from a circuit, there is no source of electricity and the circuit is broken. You MUST have these two thing for a circuit to work.
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Helping Bulbs
• The bulb allows us to see whether the circuit is correctly connected. If it is not, the bulb goes off.
Note: There must be a closed circuit so the electricity can flow.
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Switch
• A switch allows us to turn the electricity in a circuit on or off, to save energy for example.
Note: It does not matter where the switch is placed.
• Circuits can contain other electrical devices.Ex. A fan needs a motor.
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Parallel Circuit
• A parallel circuit is used to light more than one bulb at the same time. If one bulb burns out, the other bulbs will keep working.