Our focus for this week at science was about testing the buoyancy of different materials. First we discussed why some things float/sink/semi-float. Floating is the action of an object staying above water. Sinking is when something is unable to stay above water due to the density of it. Semi-float is when an object has the ability to both float and sink at the same time. We watched a video that explained what buoyancy/buoyant is. Buoyancy is the tendency of something that can float in water or a substance.
After this, we gathered our materials and looked at the size of it, weight of it and what the object is made out of. We also made predictions on whether each object would sink or not. A prediction is an educated guess of something. Some of our objects were: cube, marble, tennis ball, rectangle block, plastic block and etc
We filled up our buckets up to 2/3 and started our experiment. My parnter and I started from the smallest objects up to the largest objects. Some of our predictions were correct. We noticed that the wood materials had the ability to semi-float. The plastic materials had the ability to float and the rubber materials could float/sink.
I really enjoyed this experiment because it gave us the opportunity to learn about new things to do with buoyancy and sinking. One thing that I learned was that some objects have the ability to semi-float. I found this fact very interesting and cool.
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