Details activity Length 15 mins. Topics engineering Activity form Demonstration Language English publish

Even though eggshells space fragile, the dome form of the shells provides strength.

You are watching: How much weight can an egg hold

In this demonstrate students will marvel in ~ the quantity of weight four eggs can carry.

Arches and domes are supplied in countless forms of style including roofs, bridges, and igloos. The arcs in the dome shape distributes the weight and also pressure used on the peak evenly throughout the whole structure.

Although egg are easily cracked ifhit ~ above the side, the dome-shaped ends will assistance a great deal of weight. This is because of the reality that load pushing under on optimal of the dome-shaped egg walk not press straight down: the weight spreads outward along the curve the the egg.

### Objectives

relate the toughness of an egg come its structure.

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### Materials

Per class or Group:4 raw egg (or difficult boiled for less mess)4 pop party capsa item of poster board 30 cm x 30 centimeter (12 in x 12 in)a vinyl/plastic tableclothlots of big and heavy books (like dictionaries or textbooks)weighing range (optional)

### Key Questions

just how many books will the eggs have the ability to hold? would certainly the egg support much more or less books if castle were balanced on their sides? Why are arches and also domes for this reason strong?

### What come Do

sheathe the table v a plastic tablecloth.Place the egg in the four bottle tops, narrow finish down.Place the four bottle tops in a rectangle, about 20 centimeter x 15 cm (8 in by 6 in).Put the item of poster plank over the eggs.Begin placing books on peak of the poster board.Record just how many books (or how much weight) the egg hold before they break.

### Extensions

try the exact same experiment v the eggs well balanced on their sides. use empty eggshells. This is a an excellent option if the experiment is an task rather than a demonstration: 1. Use the edge of a spoon to very closely break off the tiny end of every eggshell. If any cracks form up the next of a shell, discard it and also use another egg. 2. Shake out the contents of each egg into a bowl, then rinse the within of the eggshells v water. Carefully dry the outside of the shells v a file towel.3. In bespeak to have actually the egg the exact same height and even top top the bottom edges, pave a piece of masking tape about each egg. The place of the tape have to be the same on every shell. 4. Use scissors (fingernail scissors occupational best) to reduced away the broken ends of the covering from approximately the bottom that the ice cream on every shell. 5. Location a publication on top of the shells, and also position the shells so that one is under each edge of the book. 6. Carefully include books, one at a time come the book on optimal of the eggshells, waiting a couple of seconds before including the next book. 7. Stop including books when you hear a cracking sound. You can use a bathroom range to recognize the load of the publications supported through the eggshells.