The Carlisle Mosquito Online

Friday, March 22, 2002


Drought experiment for kids

How does a drought affect new plants? Which growing mediums work best in drought? Try this experiment.

Materials needed:

· annual seeds, such as marigolds or nasturtiums

· sand

· potting soil (regular mix)

· peat moss

· stones

· eight four-inch pots

· paper and pencil

Fill two pots with sand, two pots with soil, two pots with peat moss and two pots with stones. Put six seeds in each pot. Water all the pots. Then separate the pots into a dry group and a wet group, one sand pot in the dry group, one sand pot in the wet group, etc. Water the wet group gently every Monday and Friday. Water the dry group every other Saturday.

Predict, observe, record

Before any growth occurs, write down your prediction of what will happen and put it away for a month. Next, make an observation chart. It will have eight rows and enough columns at the top for a week of observations. You will need at least four of these, so have someone make it on the computer and print it out a few times. Down the left side put the following: sand dry, sand wet, soil dry, soil wet, stones dry, stones wet, peat moss dry, peat moss wet. Across the top put the dates, starting with the date on which you planted your seeds. In the boxes record your observations. Watch your seeds for a month and see which grow the best. Which medium in the wet group did best? In the dry group? Think about your own garden and how your experiment relates to plants growing outside.

2002 The Carlisle Mosquito