Monday, March 14, 2011

Mini Project Monday #1: Celery gets thirsty too!

Sprite and I have been doing a lot of projects lately, and we want to share!  Starting today, every Monday we will post about a project of science experiment, so you can try it too.  Most of our projects require little in terms of supplies, and are simple enough for toddlers to do (with a little help, of course).  Our projects will include science experiments, crafts, recycling projects, field trips, outdoor activities, and more!  Come back every week to see what we're up to!

This week we have a classic science experiment to share, that you might remember from, oh, 2nd grade :-) The drinking celery!

4 glasses or mason jars
4 stalks of celery with leaves
food coloring

Fill each glass with water, and add about 8-10 drops of food coloring to each glass.  Leave the 4th one just plain water.  Add a celery stalk to each.  Wait. :-)

The celery will drink up the water and the leaves will change color from the food coloring.  You'll start noticing faint color changes in just a few hours:

After about 24 hours:

After 3 days:

If you cut the celery in half, you'll be able to see the tubes (xylem) that the plant uses to carry the water up to the leaves via capillary action.  We skipped this part since Sprite is only 2 and went with the more simple explanation that celery is a plant, plants need to drink water, and since the plant drank blue water, it turned blue!

This is even more fun using carnations or other white flowers instead of celery.  You can slit the stem of a carnation lengthwise, and put each half into a cup to get a flower that is half one color and half another.  Find the details here, along with a more detailed explanation for bigger kids.

Come back next week to see Sprite's rock candy experiment!


Heather Applegate said...

So next time she has some red or blue juice will she think she'll turn colors?

Kids Learn @ Kiboom Daily said...

We thought this was a great science lesson for young children, so we shared it on our site!

all the best,
Sherry + Wendy @ Kiboomu

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