# Eggs are Strong

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## Eggs are Strong

Next time someone’s cooking with eggs around your house, save the eggshells so that you could astound your friends with this incredible stunt.

Things you’ll need: 4 raw eggs, a small pair of scissors, masking tape, some books.

1. To crack the eggs and get four empty eggshells, gently break open the small end of each egg by tapping it on a table or counter.
2. Carfully peel away some of the eggshell.
3. Pour out the egg inside.
4. Put a piece of masking tape around the middle of each eggshell.
5. Put the eggshells on a table, open end down, in a rectangle that’s just a smaller than one of your books.
6. Lay a book on the eggshells. Do any of the shells crack?
7. Keep adding books until – CRRACKK! How many books you can stack on the eggs? Weigh the books and see how many kg or lb it took the break the eggs. Mine is 3.8 kilograms!

Each half pf the eggshell is a miniature dome, and domes are one of the strongest shapes. Why? Weight on the top of the dome is carried down along the curved walls to the wide base. No single point on the dome supports the whole weight of the object on the top of it. That is why domes are often used for big buildings that can’t have pillar supports, such as hocky rinks and arenas.

Staff at the Ontario Science Centre in Toronto have shown that a single egg can support a 90 kg (200 lb) person.

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## 9 Replies to “Eggs are Strong”

1. I think this one is not that great because (as you know) I like hard experiments.

Liked by 1 person

2. It is funny that tho ostrich eggs are the largest eggs, they are small compared to the bird. Also, you won’t get bigger eggs, because then the shell would be too thick for the chick to break out of.

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3. Good idea about the ostrich egg. The female common ostrich lays her fertilised eggs in a single communal nest, a simple pit, 30 to 60 cm (12–24 in) deep and 3 m (9.8 ft) wide, scraped in the ground by the male. The dominant female lays her eggs first, and when it is time to cover them for incubation she discards extra eggs from the weaker females, leaving about 20 in most cases. A female common ostrich can distinguish her own eggs from the others in a communal nest. Ostrich eggs are the largest of all eggs, though they are actually the smallest eggs relative to the size of the adult bird — on average they are 15 cm (5.9 in) long, 13 cm (5.1 in) wide, and weigh 1.4 kilograms (3.1 lb), over 20 times the weight of a chicken’s egg and only 1 to 4% the size of the female.

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4. 3.8 kg is impressive. I know you can stand on an Ostrich egg, as it has the thickest shell, but even these hen’s eggs are pretty tough.

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5. Sorry guys. I promised you that I’m going to perform harder experiments. But I don’t have the supplies for those experiments. I’m going to order them from over seas.

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