Stella Matutina Girls High School Project Abstracts

Sound Wave – The Terminator of Fire
Huang, Yu-Jung
Kuo, Yu-Chen
Chou, Hsiao-Chun
Chen, Ching-Han

This study aims to prove that, aside from water, sound wave can be of great use when putting out fire. Various experiments and discussions have been conducted and have yielded the following observations: the effectiveness of different frequencies of sound wave have on the flame, whether it is possible to completely put out fire with a low frequency sound wave, and the relationship between the size of the flame and the frequency of sound wave.


The savior of Brace-Wearer
Wu, I-na
Su, I-Hsien
Hsiao, Wei-Chung
Yang, Yun-Han

The present study intends, with a view to the inconveniences of braces when brushing teeth, to reform the present model of toothbrush to fit the needs of brace-wearers. The following improvements have been proposed and tested in the study: First, make use of brushes of different lengths and hardness to provide thorough care for different areas of the teeth and the brace. Second, replace fixed brush with replaceable brushes that can be inserted into the handle, thus enhancing the adaptability of the toothbrush to different areas of the teeth.