Print## Kids in the Kitchen: Celery by Midnight

### Ingredients

### Instructions

- 4 same-size stalks of FRESH celery with leaves
- 4 cups or glasses
- Red and blue food coloring
- a measuring cup
- 4 paper towels
- a vegetable peeler
- a ruler
- some old newspapers

- Lay the 4 pieces of celery in a row on a cutting board or counter so that the place where the stalks and the leaves meet matches up.
- Cut all 4 stalks of celery 4 inches below where the stalks and leaves meet.
- Put the 4 stalks in 4 separate cups of purple water. (Use 10 drops of red and 10 drops of blue food color for each half cup of water.)
- Label 4 paper towels in the following way: "2 hours," "4 hours," "6 hours," and "8 hours." (You may need newspapers under the towels.)
- Every 2 hours from the time you put the celery into the cups, remove 1 of the stalks and put it onto the correct towel. (Notice how long it takes for the leaves to start to change.)
- Each time you remove a stalk from the water, carefully peel the rounded part with a vegetable peeler to see how far up the stalk the purple water has traveled.
- What do you observe? Notice how fast the water climbs the celery. Does this change as time goes by? In what way?
- Measure the distance the purple water has traveled.