Because the density of this piece of plastic is under 1 g/cm3.
When it floats in water.
liquid water is more dense than solid water
A solid that has a density greater than the density of the medium it is placed in (i.e. water). So a piece of lead is more dense than water, and so it sinks. Styrofoam is not very dense, and it floats.
All plastic items float on water, so therefore a plastic boat floats on water.
its a solid
no ice floats on water
Whether a piece of wood floats or sinks in water depends on the density of the wood. If the wood has a lower density than water, it will float. If it is denser than water, it will sink. Wood is usually less dense than water, so it typically floats.
A piece of paper floats on water but cannot be lifted by a thousand men as it is too light.
The only solid that floats in its liquid is ice. This occurs because the density of ice is lower than the density of liquid water, allowing it to float on the surface.
Water floats when it is in the solid phase, called ice. Ice floats because the density of ice is less than the density of water.
it floats
the generator piece is behind the last stack of floats