Learn how a celery stalk can drink water! This fun experiment can be performed by even the smallest of scientists!
You will need:
- 1 stalk of celery with the leaves still on
- Water
- Red and blue food coloring
- 2 tall clear drinking glasses that are the same size
- Knife and a grownup to use it
What you need to do:
- Fill both glasses half full of water.
- Put 5-7 drops of red food coloring in one glass and 5-7 drops of blue in the other.
- Grownups- cut the celery stalk in half lengthwise almost to the leaves. Stalk should still be connected at the top. Also trim the bottom (non-leafy part) of the celery stalk.
- Place the glasses side by side.
- Put one 'leg' of the stalk in the red water, and the other 'leg' in the blue water.
- Let the celery sit in the glasses overnight.
- In the morning talk to your child about what you see and capillary action (phenomenon when a liquid rises)! See if the colors mix or blend in the leaves.
What's Happening...
Plants absorb water to survive. Water sticks to itself and to other surfaces, like when it rains. This helps the water molecules to move up very thin tubes like those in a plant. When water moves upward, we call it capillary action. In this activity the color in the water also moved up into the celery, because the water molecules attached to the color and brought it along. In nature, it works the same way with the water moving into a plant bringing nutrients from the soil.
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