This boat was so ugly it sunk! Would that be the reason?
boat animation

Buoyancy is the name given to the upwards forces exerted on a given object when it is in liquid or gas. These forces are there because pressure in liquid increase with depth, this causes upwards pressure to be greater than downwards pressure. That is why boats and ships float.


Experiment with a bucket of fresh water and a plastic bottle, cut the plastic bottle in half, place one half of the bottle on the surface of the water in the bucket and add different weighted materials in your boat observe the buoyancy levels and record your findings.  Try the same experiment in salt water.











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