Scientific sound and light show at Elda-Rouleau
BY ANGELA BROWN
Staff While the
conundrum on the internet perplexed people all over the world trying to understand the optical illusion on the weekend, students at a Glengarry science fair explored a different visually-intriguing challenge.
Some École élémentaire catholique Elda- Rouleau students participating in the school’s science fair Monday explored how a prism works to refract and split light to create the colours of a rainbow.
Elda Rouleau students in grades 1 to 8 were competing for an opportunity to participate in the April 10 and 11 StormontDundas- Glengarry United Counties Regional Science Fair in Cornwall.
Judges gave students Emma Vidad and Melissa Sliepenbeek, both Gr. 6, high marks and a chance to take part in the Counties Fair open to all schools in SD&G. Elda Rouleau will know this week if any of its students have been selected to take part in the competition.
Emma and Melissa used a white-light imaging box and adjusted the amount of light they projected onto a glass prism while documenting their results. The prism caused the light to change directions and separate to form a myriad of colours.
“I didn’t know how a rainbow is made, you learn a lot of things,” said Melissa.
Grade 8 students Océanne Poirier- Joanette and Arianne Pilon submitted a project exploring the relationship between sight and hearing. The team studied the hearing of students in grades 5 to 8 and hypothesized that older students taking part in their study would have better results than younger stu- dents. In the experiment participants were asked to identify the source of a sound while wearing a piece of fabric over their eyes to obstruct their vision. However, the outcome showed students in Grade 7 had better results than the Grade 8 students; the younger students were better able to identify the source of the sound, in this case an iPod alarm.
Arianne said she expected the Grade 8 students would have more refined hearing “because they are more developed” than the Grade 7 students, so she was surprised when her team’s experiment proved the opposite. She said she and teammate were curious about the correlation between age and listening skills.
Elda Rouleau students worked on close to 100 projects for their school fair this week. “We often have sports and art activities, so we wanted to promote another learning skill -- the sciences,” said Principal Pascale Desjardins.
Young scientists are vying for spots at regional science fair
REFRACTED LIGHT: Students Emma Vidad, left, and Melissa Sliepenbeek, both Gr. 6, test light and prisms at École élémentaire catholique Elda-Rouleau.