do science logo

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


Spray a fine mist by using two straws, a glass of liquid, and a good set of lungs.

Ingredients:

- Two straws

- Glass of water

The Recipe:

I suggest starting with a glass of water and two straws. If you work your way up to stickier, smellier or more colorful liquids such as cola or juice be careful where you aim.

1) Hold one straw vertically in a glass of water with one hand. Don't let the end of the straw touch the bottom of the glass of water (this might block the flow of water).
2) With your other hand, hold a second straw horizontally. One tip of the horizontal straw should be inserted into your mouth and the other end should be held adjacent to and form a 90 degree angle with, the tip of the vertical straw.
3) Now, blow and blow hard!
4) If your straws are set-up properly, your blowing should raise the liquid up the vertical straw. When the liquid reaches the top, it spews out in-line with your direction of blow.

Food for Thought:

Speed-up air creates lower air pressure!
By blowing through the horizontal straw you created a low-pressure region at the top of the vertical straw. This allowed the slightly higher-pressure air that was hanging around the surface of your drink to push the water down, into and up the vertical straw. Once the water got high enough in the straw, the stream of air blowing horizontally carried it along in a fine mist.

Copyright 1998 Eric Muller
While You're Waiting for the Food to Come"

Original copyright of While You're Waiting for the Food to Come 1995 Eric Muller


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