Tuesday, 23 September 2014

Potato Experiment

This week the children have joined a free on-line science course from FutureLearn. Basic Science - Understanding Experiments has just started and you can still join in.

We wanted to find out how much water is in a potato. We microwaved the potatoes in one minute intervals and plotted their weights on a graph.

Our potatoes lost 108g of water, we used scales to find out what this amount looked like.

R used a sweet potato and L used an ordinary potato. We didn't quite get to the point where all the water was driven off. R's sweet potato lost 60% of it's volume in water and L's potato lost 53%. We would expect the potatoes to lose more water if we ran the experiment longer; they were still a little juicy.

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