Celery and Food Coloring Experiment

🕔27/07/2016 11:30
A blog for Teachers

What You Need:

  • Tall, clear glass or jar
  • Water
  • Red food coloring
  • Celery stalk with leaves
  • Printable Observation Sheet

What You Do:
1.Fill a tall, clear glass or jar half-full with water.
2.Add a few drops of red food coloring and mix well.
3.Trim the bottom of a large stalk of celery, leaving the leaves on the stalk.
4.Place the celery stalk in the glass or jar. Leave overnight in order for the stalk to “drink” the water.
5.Print out the observation sheet for this activity. Have your child draw a picture of the celery stalk “before” it drinks the red water and then have him write a sentence to describe what he sees.
6.The next morning, observe what has happened. Let your child tell you where he thinks the water has gone and what has happened to the celery. If he’s stumped, explain that water has been absorbed into the celery stalk, tinting the stem and leaves red. Ask him if he thinks the whole plant gets water for food, and help guide him to see that yes, the whole plant did get the water for food since all parts of the plant have now turned red (from absorbing the red water that was in the cup the day before).
7.Have your child complete the “after” portion of the observation sheet. He can draw a picture of what happened and write a sentence to sum up his findings.

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