The “Celery Science” experiment is a classic demonstration in the primary classroom. It clearly demonstrates how water moves though plants.
Samantha’s 1st grade class had this as a homework assignment and we of course couldn’t wait to do it. Both girls were so excited about the experiment and when they woke up in the morning they were shocked at what they saw!
This was the instructions we received:
- 1. Cut the pieces of celery to the same length, tall enough to fit into the glasses so they’ll be completely submerged by water. Make sure to chop off the bottom and the top at the leafy part so you’re left with the stalks.
- 2. Fill each of your 6 glasses with an equal amount of water, about 3 inches from the top.
- 3. Add 10 drops of red food coloring each to 3 of the cups.
- 4. Add 10 drops of blue food coloring each to the remaining 3 cups.
- 5. Place one piece of celery into each glass. After this step you’ll have 6 cups, 3 with red coloring and 3 with blue coloring and each with a stalk of celery submerged in it.
- 6. After 2 hours, take a stalk of celery out of a glass with blue food coloring. Has the color of the celery changed? Use your vegetable peeler to peel the stalk of celery and see how far the change has gone. Write the results in your journal.
- 7. Remove a stalk of celery at the intervals of: 2 hours, 4 hours, 8 hours, 24 hours, and 48 hours (you have 6 glasses, and thus 6 stalks of celery).
- 8. After each interval has passed, remove a stalk and peel it, notating in your journal the changes to the celery after each interval.