This week in science we investigated water resistance and the resistance in other liquids. We first of all considered what it is like to walk in water.
We then carried out a mini investigation, observing what happened when we dropped a coin in a container of water, oil or golden syrup.
We talked about the forces of gravity and how in the different liquids, the upthrust changed, resulting in the coin taking a different amount of time to get to the bottom.
We introduced the word viscous and recorded our observations.
We then investigated water resistance using blutac.
Finally we got a can of full fat cola and a diet cola and predicted whether they would sink or float.
We were surprised when the full fat can sank and the diet floated. We learnt that this was because of the sugar in the full fat cola.
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