Wednesday, 17 May 2017

Technicraft - Scientist at Work!


Image result for bubblesImage result for bubbles
Have I caught your attention?
Year 8s were in an interesting lesson at Technicraft, the subject being, science. The lesson was to teach the students about the structure of a bubble, how different chemicals and ingredients affect the life of a bubble.

A plastic drinking straw was required to blow into a solution composed of sugar, water/H2O, and detergent. The previous experiment was almost similar if not the same, with the exception of the presence of sugar. Considering that detergent increased the longevity of the bubbles, the sugar would either decrease or increase the time of evaporation and dehydration of the bubbles.

However, when the air was forced into the solution, it had formed a big bubbly mountain of bubbles. The shape of the bubbles no longer consisted of spheres as the shapes were now connected with a decently sized wall and having a honeycomb-like shape.

After cleaning up the bubbly and wet mess, the next experiment was ready to begin. The task was to observe what occurred when bubbles were formed inside a bubble and to see the possible amount of bubbles that are able to be fitted into one (volume). The students felt desperate with every bubble blown but looking at it from a scientific perspective, many changes could be seen. An example of this was when a bubble was blown inside a bubble. The expanding bubble could cause the other bubble to dehydrate or evaporate and in most cases expand at almost the same rate.

The last and most difficult experiment was to see the measurement of time and distance the bubble could cover in a life. The experiment proved that the size of the bubble can affect the life having bigger ones evaporating and dehydrating before the more smaller sized ones.