Even though eggshells are fragile, the dome shape of the shells provides strength. In this demonstration students will marvel at the amount of weight four eggs can carry.
Arches and domes are used in many forms of architecture including roofs, bridges, and igloos. The arches in the dome shape distributes the weight and pressure applied on the top evenly throughout the entire structure.
Although eggs are easily cracked if hit on the side, the dome-shaped ends will support a great deal of weight. This is due to the fact that weight pushing down on top of the dome-shaped egg does not push straight down: the weight spreads outward along the curve of the egg.