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Title: Coal To Electricity
Level: Middle School
Time: 40 minutes
KERA Goals: 1.9; 2.13; 2.4
Over 56 percent of the electricity in U.S. is generated from coal. In fact, more than 84 percent of the coal consumed each year in the U.S. is used to generate electricity. It takes about one pound of coal to generate one kilowatt hour (kwh) of electricity.
Estimated Pounds of
Copy of "Coal to Electricity" table
Construct a bar graph that indicates the amount of coal required to run each of the following appliances for one hour.
How many pounds of coal would be needed to operate a color TV for 8 hours? 16 hours? 24 hours?
How many hours of electricity annually do the following appliances consume based upon the "Coal to Electricity" table? Color TV? Water Heater? Dishwasher? Clock?
How much more coal is needed to run a color TV for one hour than to run a B/W TV?
A 100 watt light bulb uses 1 kw of electricity per hour. How many pounds of coal are needed to run one 100 watt light bulb for 6 hours? 8 hours? 10 hours?
Provided by National Energy Foundation.