Air Shell is a shell is air in it.....duhhh
thin air
cause in the egg-shell there is air ! !
the atmosphere
The density of the shell contents. Fresh eggs have very little air within the shell. While the shell does not appear so, it is very porous and as moisture leave the shell interior, it is replaced by air. The older the egg, the bigger the air bubble within.
If you mean an egg in the shell, there is a small amount of air in the shell along with the egg. That acts as a float.
It is a bubble
The large end or "air chamber"
Inside the egg shell there are two membranes surrounding the yolk and albumen. A small amount of air is available within. The egg shell, even though it does not look like it, is porous and allows a small amount of air in and out. This air pocket is the reason eggs are incubated with the pointy end down. This allows for the maximum amount of air inside the shell to be collected and maintained within.
A sea shell is a natural insulator because it contains minerals and air pockets that hinder the flow of electricity through it.
The have solid exoskeletons which cannot grow larger, unless they split their shell and expand into a larger shell, which hardens on contact with the air.
Air soft shotgun shells are the size of 12 gauge shotgun shells.
Shell casing: Outer paper or plastic casing that encloses the explosive composition. Burst charge: Explosive material within the shell that propels it into the air and causes it to burst. Lift charge: Propellant at the base of the shell that launches it into the air. Fusing system: Mechanism that ignites the burst charge at the desired altitude.