UV+Light-Shawn_Jack+G

=**Can UV light sustain plant growth better than sunlight can?**=

The Hypothesis is that sunlight will sustain a plant's growth better than ultraviolet light will.

Two radish plants were grown. One was put in a greenhouse. The other was put under a black light, which produces UV light. Once a week for three weeks, the height and leaf and sprout counts were measured.

The results supported the hypothesis that sunlight would sustain plant growth better than ultraviolet light would. The height of the sunlight plant, along with the leaf and sprout counts, were greater throughout the experiment.

If anyone else is ever interested in a project like this, we would suggest growing multiple plants for both lights. This is a precaution in case one of the other plants dies, and to make the results more accurate. Also, you should use a power timer on the plant under the black light. This is because the black light will overheat, and create a potential fire hazard.

If someone were to take this project to the next level, we would suggest using multiple rays of light and/or radiation to test against each other.

We probably would not choose this project again mainly because we learned much and this project was very difficult, more difficult than most projects. We personally would choose a sports project instead of this, but if you like challenges or botany, choose this project.

Chart of growth of plants

Chart of leaf and sprout counts

Table of data

Photo of Sunlight plant after 1 week

Photo of UV Plant after 2 weeks

Shawn and Jack