Alysa+Buck 

Title: Are we safer Inside or Outside? Title should not be in a form of a question, Maybe a more reflective title of your topic would be better.(Savanah Weston) Hypothesis: If I test LED, Halogen, Reflectionised, CFL, and Xenon light bulbs for Ultraviolet radiation, then LED lights will emit the least amount of Ultraviolet radiation. Instead of saying UV light maybe say Ultraviolet light until you explain in your background that UV stands for Ultraviolet. (Savanah Weston) State the types of light bulbs you will be using. Ms. Miller Problem: Do light bulbs emit UV radiation, if so which light bulb produces the least amount of UV radiation? ( This might make more sense in the form of 2 smaller questions. Adding 'really' in the question almost makes it sound too personal. -Eleanor Burnette) Background information: Ultraviolet light, also known as UV light, is measured in a unit called a nanometer also known as nm. ("Ultraviolet light, also known as UV light" -Eleanor) A nanometer is a billion meters (a billion nm equals 1 meter. Trevor). Where visible light ranges from 380nm to 780nm, UV light has a far smaller wavelength from 10 nm to 400 nm and therefore a higher frequency ( Deadly Skin Cancer on the Rise). Ultraviolet light is made up of three different types of rays named UVC,UVB and UVA. UVC rays are comprised of the shortest wavelengths. Due to this fact the wavelengths never reach the surface rather they are absorbed by gases found in the atmosphere. (A bit of a run on sentence. It might make more sense if it became a new sentence at "Due to this fact,..." -Eleanor) UVB rays are made up of the middle wavelengths, or medium wavelengths. Most of these wavelengths never reach the earth's surface for the ozone layer absorbs them. Due to the ozone's deterioration more and more of these rays have reached the surface of the earth. It is this ray that is responsible for the much hated sunburn. The final ray is called a UVA ray it is comprised of the largest wavelengths, and is never absorbed by the atmosphere or ozone layer. (If it has larger wavelength doesn't it mean it has less energy so it should not penetrate as far as electromagnetic radiation with shorter wavelengths. It sounds like you mean to say frequency. Higher frequency waves should penetrate further than lower frequency. Trevor) Meaning that all of these rays hit the surface of the earth. Exposure to UV light has been known to cause mutations to skin DNA and is known to be the cause of skin cancers such as basal, squamous, and melanoma. UVA light is the most dangerous form of UV ray and is thought to be the cause of these mutations ( Deadly Skin Cancer on the Rise). Since the invention of sunscreen in the 1950’s skin cancer has actually increased forcing scientists question the true efficiency of sunscreen. Between 1950 and 1990 there was a 336% increase in people developing melanoma, the most harmful of skin cancers, as well as a 156% increase in death by the disease ( Deadly Skin Cancer on the Rise). This lead to scientists concluding that sunscreen is not as protective as we once thought. Based on this conclusion scientist have branched out looking for other reasons in the rapid increases. At the Stony Brook University scientists discovered that CFL or fluorescent light bulbs were actually emitting traces of UV radiation ( Health). Their conclusions were that cancers and premature aging could actually be caused by the artificial light we use as well as sunlight, UV light. Scientist looked even further and found that many different types of light bulbs were giving off trace levels of UV radiation, most alarming was that tanning beds and lamps give off large amounts of UVA rays ( Radiation-Emitting Products). This would explain the rapid increase of melanoma in young women in the past years rather than young men, even though men are 1.5 times more likely to develop melanoma ( Skin Cancer Foundation).

Materials (all prices are for single package): Total: $259.28 All found at wal-mart except Clear Tech 22OR VHOR was found at tanning lights.com. Procedure: Box: Experiment: For constant Bibliography:
 * Safety goggles (1)$5.50
 * Uv beads (1 package)$6.95 (250 beads)
 * Black foam poster board (2) $2.88
 * Petri Dish (1)$18.00 (20 pack)
 * Lamp (1)$9.97
 * Electrical cord (1)$6.75
 * Clear Tech 22OR VHOR (3) $16.79
 * LED light bulb (3)$8.88 (3 pack)
 * CFL light bulb (3)$29.73 (5 pack)
 * Reflectorized light bulb (3)$7.00
 * Halogen light bulb (3)$6.60
 * Xenon light bulb (3)$9.85 (20 pack)
 * T 8 light bulb (3)$24.97
 * Glue gun (1)$5.62
 * Glue gun sticks(1)$4.99 (40 pack)
 * Scissors (1) $1.00
 * UV flashlight
 * 1) Gather materials and take safety precautions.
 * 2) Plug in glue gun.
 * 3) Use Scissors or box cutters to cut black poster board into four 2 feet by one foot rectangles.
 * 4) Use the glue gun to form a box shape out of the four pieces. Leave the rectangle designated for the top unglued.
 * 1) Gather materials and take safety precautions.
 * 2) Place box in a darker environment, leave the top off.
 * 3) Place five beads in the petri dish.
 * 4) Set the petri dish with the beads inside into the bottom of the box.
 * 5) Screw the appropriate light bulb into the lamp.
 * 6) Set the lamp inside the box.
 * 7) Plug in the lamp as you close the lid to the box.
 * 8) Wait for 10 minutes.
 * 9) Remove the top of the box and record the results.
 * 10) Repeat all steps replacing different light bulbs each time. Do three trials of each type of bulb.
 * 11) (For tanning bed lights sub for 5-7) Attach bulb to the extension cord.
 * 12) Place the bulb inside.
 * 13) Close the box as you plug in the cord.
 * 1) Gather materials and take safety precautions.
 * 2) Cut a small hole in the top of the box so that you are able to hold the flashlight from the outside.
 * 3) Place the box in a dark environment leave the top off.
 * 4) Set five beads in the petri dish
 * 1) "Isagenix Health." Isagenix Health. N.p., n.d. Web. 3 Oct. 2013.
 * 2) “Deadly Skin Cancer on the Rise.” Today's Science. Infobase Learning, Apr. 1994. Web. 25 Oct. 2013.
 * 3) "Health." CBS Los Angeles. N.p., 18 Oct. 2012. Web. 25 Oct. 2013.
 * 4) "Skin Cancer Foundation." Melanoma Soars among Young Adults. N.p., 4 Dec. 2012. Web. 28 Oct. 2013.
 * 5) "Radiation-Emitting Products." Tanning. N.p., 4 Sept. 2013. Web. 28 Oct. 2013.
 * 6) "Radiation-Emitting Products." Compact Fluorescent Lamps (CFLs) – Fact Sheet/FAQ. N.p., 06 June 2012. Web. 23 Oct. 2013.
 * 7) "American Lighting Association." Types of Light Sources and Light Bulbs. N.p., n.d. Web. 26 Oct. 2013.