Energy Saving Light Bulbs Crossword Puzzle

QUESTIONS LIST:

• price : what goes up when buying led lights compared to other lights?
• cfl : compact fluorescent lights
• photons : what do light bulbs emit
• incandescent : bulb that uses the most energy
• led : lights that have a positive environmental impact
• lumens : what are the units for brightness
• mercury : something led lights don't have that make them safer for the user
• watt : you can buy bulbs in different what
• electrons : led lights turn on with what moving around
• lifespan : the first bulbs ever created didn't work for the public because of a short _ .
• energy : what department partnered with a private industry to push white led technology
• filaments : something led lights don't have that often burn out
• efficient : in 1960 bulbs became a lot more energy _ .
• pressure : something edison changed when creating his bulb along with the filaments