test 2/17/2015
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Circuits in your home actually begin and end at | power plants
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| the outlets in your home provide _________ current | alternating
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| A switch controls the _________ of electricity | flow
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| special switches such as _______ (for temperature) and ________ (controls light brightness) can be used | thermostats
dimmers
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| Circuit _______, _________ and _________ outlets protect you by limiting the flow of electricity | breakers, fuses and GFCI
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| ________ measure the amount of electrons you NEED (does not change) | Volts
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| __________ measure how fast you use the electrical energy (does not change) | Watts
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| __________ measure how many electrons flow by | amps
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| watts= amps x _____ | volts
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| kilowatt hours measure the ________ of electricity you use | amount
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| How does electricity get to your house after it is made in a power plant? | The electricity goes through power lines
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| What are some of the electrical safety devices in your home and how do they work? | GFCI outlets because if you are getting electrocuted, it stops the flow of electricity.
Insulation on wires because it keeps you from getting shocked
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| Magnetism creates ________ | electricity
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| Electricity creates ________ | magnetism
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| Magnets have 2 ______; electricity has 2 _______ | poles
charges
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| the same poles _______ | repel
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| opposite poles ________ | attract
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| The same charges _____ | repel
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| Opposite charges ________ | attract
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| ________ forces do not need to touch to repel or attract | Magnetic
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| ______ charges do not need to touch to repel or attract | Electricity
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| A ________ uses a __________ to produce _________ energy | generator
magnet
electrical
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| What are the 4 main parts to a generator | Magnet - turned by drive shaft
Copper wire - magnet moves electron in the wire
Drive shaft - turns magnet
turbine - turns the drive shaft
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| This is how a generator works | 1 - The turbine is turned by something that moves (mechanical energy)
2- the turbine turns the drive shaft
3-the drive shaft turns the magnet
4-the magnet moves electrons in the copper wire
5-the electrons move out to other wires (electricity)
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| Steam, _____ water, and the _________ can be used to turn the turbine | moving
wind
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| ______, coal, natural gas and ______ can be burnt to heat up water to make steam | oil
biomass
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| Natural _____ and _____ are the most popular, but they pollute the air | gas
coal
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| _______ panels can produce electricity without a generator (photovoltaic cells) | solar
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| Describe how the chemical energy in coal is turned into electrical energy | It goes through a hopper and into a furnace
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| Describe how the kinetic energy of a river is turned into electrical energy | water turns a wheel that is connected to a turbine which makes electricity
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Created by:
sdrago
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