Micro-organisms Topic

As part of our science topic on micro-organisms, we performed a yeast experiment. We put yeast, sugar and warm water in a transparent bottle. After 15-30 minutes, most of the balloons had slightly inflated. Some of the balloons inflated quickly but some didn’t inflate until two hours later. The reason why the balloons inflated was because the yeast fed on the sugar and as the yeast was breathing out, carbon dioxide made the balloon inflate.

By Zoe and partly Samantha (She didn’t help much!)

Rotting apple

Micro organisms

Over the past couple of weeks we have been looking at micro organisms in science.
While doing this we have been watching some videos
about germs and mould. WARNING: these can be rather disgusting!!!! BUT NO NEED TO HIDE BEHIND THE SOFA.

What are germs?