Helen+C14

Helen C Cary Academy
 * DETERMINING WHICH COLOR UV BEAD CHANGES COLORS THE FASTEST **

The purpose of this experiment was to determine which color UV bead changes colors the fastest. The bead colors blue, purple, yellow, orange, green, and red were tested. It was hypothesized that the blue bead would change colors the fastest because the darker the color is, the more light it absorbs. The process followed to perform this experiment was first to take one specific color UV bead and shining the UV light over the bead. Next, the stopwatch was started when the UV light was turned on and when the UV bead stopped getting any bolder, the stopwatch was stopped. The data as recorded and there were 2 more trials for every color and this process was repeated for each color. The averages of the three trials were recorded for each color. At the end of the experiment, the purple bead ended up changing colors the fastest. Its 3 trials were 15.15, 16.58, and 14.65 seconds. The blue bead’s 3 trials were 27.88, 29.15, and 26.86 seconds. The yellow bead’s 3 trials were 30.95, 23.01, and 26.60 seconds and the orange bead’s 3 trials were 42.35, 44.27, and 44.72 seconds. Lastly, the green bead’s 3 trials were 36.90, 35.20, and 36.13 seconds and the red bead’s 3 trials were 38.79, 37.10, and 37.38 seconds. The purple bead was first, the yellow bead was second, the blue bead was third, the green bead was fourth, the red bead was fifth, and the orange bead was last.
 * ABSTRACT **

There are a couple ways that this experiment could have been improved. When the UV light was placed above the UV bead, there should have been a specific height that the UV light should have been placed at. Also, when the UV light was turned on, the stopwatch wasn't started at the same time so if this experiment was performed again, there should be one person starting the stopwatch and one person turning on the UV light. There are a few other experiments that could be done in this same field of study. The first experiment would include making the beads different temperatures and seeing if this would affect the time it took for the UV bead to change colors when exposed to UV rays. The second experiment that could be performed in this same field would be dipping the UV beads in different liquids and determining if the UV rays would penetrate through the liquid.
 * EXPERIMENTAL IMPROVEMENTS AND FUTURE EXPERIMENTS **

To read the complete ISP paper for this experiment, click on the PDF link below. 