Our mission, in science this week, was to investigate the effects of water resistance on objects. This followed on from our previous learning about how air resistance effects objects, in which the children found that the impact of air resistance increases, the larger the surface area of the object. We wondered if the same rule applied this time.
The children created five different shapes using plasticine. They had to ensure the mass of each one was the same, but the surface area needed to be different. This is known as the independent variable. The children dropped the shapes into a container of water and timed how long they took to reach the bottom. We had to be very quick at timing! The results were recorded in a table and our next job is to work out the average time for each shape and analyse the results. From this, the children will write a scientific conclusion.
Ask your child about the investigation. Can they tell you about different types of variables withing investigations? You could even set up a similar activity at home and see what results you get.