This movie requires Flash Player 8. Download Flash Player 8

 
© 2014ApologeticsPress
(800) 234-8558
syndication   |  About AP   |  Sign up for E-mail Newsletter    |    Privacy Policy    |    Contact Us
ApologeticsPress.org
Issue Features
Discovery Magazine 11/1/1998


Watering a Redwood

The world’s tallest known tree is a coast redwood. It lives in the Redwood National Park of Northern California, and was almost 368 feet high the last time it was measured. The tallest tree in the record books was measured in 1872. It was a eucalyptus tree growing in Australia, and was 435 feet high. The question is: How does water get to the top of these tall trees?

Nobody knows for sure. Water doesn’t move in trees the same way that it moves in a simple tube, like a drink straw.

Here’s what we do know. Leaves have tiny openings called stomata. These let in carbon dioxide for photosynthesis, but water can get out at the same time. The loss of water in this way is called transpiration. As water escapes, more water moves up from the roots to replace it. Indeed, scientists have studied the sap, and found that something is sucking it up. They’re pretty sure that this sucking force is transpiration.

There’s more. Water molecules "stick" to each other and to the sides of the vessels through which they’re flowing. This means that one molecule of water can pull on another. Also, it means that the column of water does not break easily. Even if transpiration stops at night, sap can continue to flow the next day. It’s also the reason people should cut the stems of their flowers under water. This keeps the water flowing, and the flowers don’t dry out as quickly.

Without transpiration and the "stickiness" of water, tall trees like the redwood could not grow. This reminds us of what God said about the cedar trees of Lebanon:

The waters made it grow; 
Underground waters gave it height,…
And its branches became long because of the abundance of water,…
Thus it was beautiful in greatness and in the length of its branches (Ezekiel 31:4-5,7).

Yes, tall trees are beautiful, and they provide homes for birds, wood for building, and good air to breathe. We can thank God for designing such a clever way to water them.



Copyright © 1998 Apologetics Press, Inc. All rights reserved.

*Please keep in mind that Discovery articles are written for 3rd-6th graders.

This document may be copied, on the condition that it will not be republished in print unless otherwise stated below, and will not be used for any commercial purpose, as long as the following stipulations are observed: (1) Apologetics Press must be designated as the original publisher; (2) the specific Apologetics Press Web site URL must be noted; (3) any references, footnotes, or endnotes that accompany the article must be included with any written reproduction of the article; (4) textual alterations of any kind are strictly forbidden; (5) Some illustrations (e.g., photographs, charts, graphics, etc.) are not the intellectual property of Apologetics Press and as such cannot be reproduced from our site without consent from the person or organization that maintains those intellectual rights; (6) serialization of written material (e.g., running an article in several parts) is permitted, as long as the whole of the material is made available, without editing, in a reasonable length of time; (7) articles, in whole or in part, may not be offered for sale or included in items offered for sale; and (8) articles may be reproduced in electronic form for posting on Web sites pending they are not edited or altered from their original written content and that credit is given to Apologetics Press, including the web location from which the articles were taken. Further, documents may not be copied without source statements (title, author, journal title), and the address of the publisher and owner of rights, as listed below.

For catalog, samples, or further information, contact:

Apologetics Press
230 Landmark Drive
Montgomery, Alabama 36117
U.S.A.
Phone (334) 272-8558

http://www.apologeticspress.org

Web Store

Is the Bible Reliable? - DVD

SALE PRICE - $9.00 ea. down from $12.00. Now is a great time to think of great gift ideas.

Featured Audio

Listen

Click the following link to visit our Multimedia section.

Featured Audio