Waiting for the food to come?
Hear an audio activity
contact and comments
Find out the latest Science News
kudos and connections
About do science
Do Science services
The Do Science store


To get a Do Science logo product, click here.


Send a t-shirt with an activity on the back
(Condiment Diver activity is on back).


Return to
The Archive List

Do you have a comment or response to this activity, submit it to the Do Science bulletin board.

More science activities can be found here:
while you're waiting for the food to come
Great for Science Fair projects!

While You're Waiting for the Food to Come
by Eric Muller, Illustrated by Eldon Doty

Hardcover
version

Paperback
version
To order or find out more about this book,
click on the book cover above or on either cover version.
Go to the Do Science Store

 

Is the yoke on you?

Ingredients:

- An uncooked unpeeled egg

The Recipe:

1) Challenge some one to break an egg in the palm of their hand. Bet them that they can't do it by squeezing the egg with their palm and fingers.

2) Place the egg in their hand.

3) Have them slowly curl their fingers around the egg and start squeezing.

Food for Thought:

It didn't break, did it?
By wrapping your fingers around the egg, pressure is evenly distributed throughout the shell. Eggshells are incredibly strong for their weight. The spherical shape of the eggshell maximizes strength with a minimum of shell material.

Option:
If you want to break the egg, you'll need a ring.

If you or some one else is wearing a ring (like a wedding ring) on your finger, squeeze the egg like above. The small contact where the hard metal ring and shell meet is an area of significantly higher pressure. This uneven distribution of pressure will vary likely cause the eggshell to crack. Once a crack forms, that's it!

 


Copyright Do Science 2000.


Activities | Waiting for Some Food? | Hear an Audio Activity | Contact & Comments | Do News | Kudos & Connections
About Do Science | Educational Resources & Presentation Services | The Do Science Store
Search | Home

Copyright Do Science® 1999