Kaylinn+Tessendorf+&+Hailey+Trulock

__**Title**__: UV Light Affect on Plants Kaylinn Tessendorf and Hailey Trulock

UVB lighting has the most negative effect out of UVA, UVB, and UVC lighting. "According to artificial UV light exposure studies on crops, UV rays decrease the crop yield in key crops, such as rice, soy, oats, beans and sorghum. The plants minimize their exposure to UV by limiting the surface area of foliage, which in turn impairs growth. The observed drop in yield, however, does not seem serious enough for scientists to sound the alarm." (Carver) We are going to test if UVB lighting has an effect on a couple of radish plants. We are interested in this topic because we want to know if UVB lighting makes the most negative effective on plants. " Since some species are more vulnerable to UV-B than others, an increase in UV-B exposure has the potential to cause a shift in species composition and diversity in various ecosystems. Because UV-B affects organisms that move nutrients and energy through the biosphere, we can expect changes in their activities to alter biogeochemical cycles." ( "Ultraviolet Radiation: How It Affects Life on Earth : Feature Articles.")
 * __Background__**:

Need to write this as a more descriptive paragraph. Less quotes and more rewriting in your own words. Ms. Miller

**__Hypothesis__**: If a radish plant is put in UVB lighting, then it will grow less than radish plants in the dark and in natural sunlight with 30 minutes of UVB every other day.

**__Materials__**: Three sets of three radishes (radish seeds) A small UVB Light A ruler Soil Water Three plastic plant trays What type of radishes will you be using? Autumn Anzell and Morgan Gabbert You should add the measure of the UVB light that will be used. Autumn Anzell and Morgan Gabbert How much does each material cost? Jessica Tilton What kind of soil, and will it be consistent with each radish? Jessica Tilton __**Procedure**:__ 1. Plant three sets of three radishes, each set in a different tray. 2. Put one of the trays under the UVB light. 3. Put one of the trays in complete darkness 4. Put one of the trays in natural/artificial sunlight (depending on your resources) 5. Everyday we will record the growth of each plant 6. Each plant will be watered every other day

More detailed methods. Ms. Miller

**__Independent variable__**: UVB Lighting

Plant growth of the radishes
 * __Dependent variable__**:

Four sets of three radishes (radish seeds)-$0.99 A small UVB Light-$13.69 Ruler- Available at school Soil-$1.47 Water- Available at school Four plastic plant trays-$2.85
 * __Budget__**:

Are you measuring in inches or centimeters? (Lena and Zoe) How much soil will be in each container? (Lena and Zoe)
 * __TOTAL__**: $19.00

Carver, Noelle. "How Does UV Exposure Affect Plants & Animals? | EHow." EHow. Demand Media, 22 Feb. 2011. Web. 18 Oct. 2013.
 * __Bibliography__**:

"Ultraviolet Radiation: How It Affects Life on Earth : Feature Articles." Ultraviolet Radiation: How It Affects Life on Earth : Feature Articles. N.p., n.d. Web. 18 Oct. 2013.