Power of Electricity

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Power of Electricity
Electricity Its SHOCKING!
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Generating Electricity

• An electric generator converts mechanical energy
  into electrical energy. A generator uses motion
  to produce electric current.
• A turbine is a circular device that is made up of
  many blades.
• Not all turbines are turned by water.
• Can you name other ways of
• turning a turbine?
• Can you name 7 energy resources?

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Inside a Hydropower Plant
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Resources

• Fossil Fuels such as coal, oil, natural gas can
  be burned in generating plants to produce steam.
• Renewable resource - one that can be replaced in
  nature at a rate close to the rate at which it is
  used.
• Nonrenewable resource - one that exists in a
  fixed amount.

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Facts
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Wind Power
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Electricity Vocabulary

• Current is the flow of electrons. Measured in
  amps.
• Resistance is slowing down the flow of electrons.
  Measured in ohms.
• Voltage (or potential difference) is energy
  available to move charges through a circuit.
  Measured in volts.

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Resistors
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Electricity Vocabulary

• Switches can complete a pathway or disrupt it.
• Conductors allow electrons to move freely through
  them. Can you name some examples?
• Insulators dont transfer electricity easily.
  Can you name some examples?

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Switch
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Electrical Terms
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Conductors
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Series, Parallel or Both?

• One pathway for current
• Flow of electrons
• Several paths or braches for current to flow.
• Needs conducting wires
• Household circuits
• Lights become dimmer as more bulbs are added
  (current decreases).
• Lights stay the same brightness as more bulbs are
  added.

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Circuits
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Electrical Safety

• A fuse uses a thin strip of metal that melts when
  current gets too high. Fuses are found in cars
  and old buildings/homes.
• A circuit breaker has a reusable switch
  (electromagnet) that breaks the circuit when
  current is too high..
• Most buildings have a wire that connects all
  electric circuits to the ground.
• How does a third prong work on a plug?

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