Science project

Water and Mosses

Research Question:

  • What is a vascular plant? What is a non-vascular plant?
  • Why are non-vascular plants small? What does the size of a plant have to do with how water is transported?
  • How are mosses different from other plants?


  • One cup of sphagnum moss
  • Food scale (the type dieters use works well)
  • Water
  • Two-cup measuring cup

Experimental Procedure:

  1. Weigh the measuring cup and record the weight.
  2. Fill the cup with one cup water and weigh. Calculate the weight of the water by subtracting the weight of the cup.
  3. Fill the cup with 1 cup sphagnum moss and one cup water. Let the cup stand in direct sun for two hours.
  4. Remove the excess water by turning the cup upside down and gentle squeezing out the excess.
  5. Measure the weight of the wet moss. Don’t forget to subtract the weight of the cup.
  6. Dry the moss in direct sunlight for several days until it is completely dry. Weigh the dry moss, remembering to subtract the weight of the cup.
  7. Calculate the difference in weight between the dry moss and the wet moss.
  8. Using the dry moss weight and the water-and-moss weight, calculate the ratio between the weight of the dry moss to the weight of the water it held.

Terms/Concepts: Moss, vascular plant, non-vascular plant, sphagnum moss

References: Estrella Mountain Community College - Bryophytes

Disclaimer and Safety Precautions provides the Science Fair Project Ideas for informational purposes only. does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against that arise thereof. In addition, your access to's website and Science Fair Project Ideas is covered by's Privacy Policy and site Terms of Use, which include limitations on's liability.

Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.

Add to collection

Create new collection

Create new collection

New Collection


New Collection>

0 items