Decimals Worksheet - Unit 3 Page 2
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38K K e e y y W W o o r r d d s s
ten-thousandths
Weather Dancer is a 72-m wind
hundred-thousandths
turbine in southern Alberta. It generates
2.96 gigawatt hours of electricity each year.
millionths
Weather Dancer supplies electricity to
460 homes.
Electrical power is measured
in units called watts.
1000 watts
1 kilowatt
1 000 000 watts
1 megawatt
1 000 000 000 watts
1 gigawatt
The amount of electricity generated or consumed
is measured in watt hours. One kilowatt hour
means 1 kilowatt of electricity is used in 1 h.
The winner of the
Canadian Environment
Award in 2004 was
William Big Bull, a
member of the Piikani
First Nation. Through
his efforts, Weather
Dancer was built.
• How are kilowatts, megawatts, and gigawatts related?
• About how many gigawatt hours of electricity will
Weather Dancer generate in 5 years?
• How could you find how many megawatt hours of electricity
Weather Dancer generates in 1 year?
• A typical Alberta household uses about 21.37 kilowatt hours of
electricity each day. About how much is used in 1 week?
87
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