LESSON 9
Home Activity Comparing Light Bulbs Reading: Download from www.energy.gov/energysaver/downloads/energy-saver-guide Pages 23-26 of the Energy Saver guide
Materials Compact fluorescent light bulb (CFL) Light emitting diode bulbs (LED)
Procedure 1. With your family, examine the pictures and the data of the incandescent, halogen, CFL, and LED bulbs below. 2. Notice that the amount of light produced by the bulbs is the same, but the wattage, the cost, and the life of the bulbs are different. 3. With your family, use the Facts of Light Worksheet on the next page to determine the amount of money you can save by using CFLs or LEDs instead of incandescent light bulbs.
Action 1. Replace incandescent light bulbs in your home with energy efficient lighting. FOR YOUR SAFETY: Replace bulbs only after allowing the bulb to cool. Incandescent or halogen bulbs can be VERY hot if illuminated.
60
INCANDESCENT BULB
HALOGEN
COMPACT FLUORESCENT (CFL)
LIGHT EMITTING DIODE (LED)
Brightness
850 lumens
850 lumens
850 lumens
850 lumens
Life of Bulb
1,000 hours
3,000 hours
10,000 hours
25,000 hours
Energy Used
60 watts = 0.06 kW
43 watts = 0.043 kW
13 watts = 0.013 kW
12 watts = 0.012 kW
Price per Bulb
$0.50
$3.00
$3.00
$8.00
Saving Energy at Home and School