BVI National Science Fair
Team Claudia Creque Educational Centre Sec.
"Elastic band paddle boat"
Grade 7-9
By: Alisha Walcott
Abstract:
The aim of this experiment is to create an elastic band paddle boat using elastic potential energy which was converted into kinetic energy to power the boat. As you whine the paddle with the elastic band, the band stretches, storing up energy. When you let the paddle go the elastic band unwinds to shrink back to its original size releasing the stored energy, and turning the paddle. The turning of the paddle propels the boat forward in the water.
"rock candy"
Grade 7-9
By: Asaud Smith & Kimoyah Smith
Abstract:
The objective of this project is to make rock candy. At what temperature does the solution crystalize? Rock Candy can be made by forming a solution of water and sugar. The solution is boiled down until all the sugar has dissolved and all that is left is a clear, sticky syrup.
Colour and flavour is then added to this mixture and transferred to another container to prepare for crystal growth. This is the process of crystallization. As the sugar water cools, sugar molecules will separate from the water and stick to other sugar molecules, forming solid crystals. In conclusion, the crystallization of the water and sugar solution can occur at 70 to 90 degrees Celsius.
"kidneys in motion"
Grade 10-12
By: Gorcia Johnson, Rayonah Vanterpool and Liaili Rosario
Abstract:
"strawberry dna extraction"
Grade 10-12
By: Angelina Evans
Abstract:
Which detergent is better for the DNA extraction of a strawberry: liquid or powder?
The objective of this project is to investigate which type of detergent, liquid or powdered, is better to use in strawberry DNA extraction. I hypothesize that liquid detergent is more effective than a powdered one. The real-life relation to this experiment is that we use DNA extraction for medical purposes, crime solving, ancestry determination and to identify the deceased. Upon gathering my apparatus and materials, I labeled one beaker “Liquid” and the other “Powdered”. I blended salt, cold water and strawberries, divided the mixture into two beakers and added powdered detergent to one and liquid detergent to the other. I gently stirred them, then let them sit for 10 minutes. I poured 1/3 of both mixtures into their respectively labeled test tubes, “Liquid” and “Powdered”. I added 4 drops of pineapple juice to each one. After gently swirling to mix, I lightly poured alcohol down the side of the test tube to create a layer over the mixture, pouring until the amount of mixture and the amount of alcohol was equal. I observed both for a white, stringy substance (the DNA). I collected the DNA using a wooden straw and placed it under a microscope to observe. The remainder of the mixture was stored in two containers. Results were recorded in a table. It can be concluded that the liquid detergent is a better option for DNA extraction, as the DNA strands were more visible than with the powdered detergent.
