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Active Time
30-45 minutes
Total Project Time
1-2 hours
Key Concepts


Have you ever wondered how plants take up water from the soil? Water uptake in plants is quite complex and involves a process called osmosis. Osmosis makes the water from the soil move into the roots of the plant. But what drives the water from the soil into the plant cells? In this activity, you will do an experiment with potatoes to find out!


Svenja Lohner, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.


  • Distilled water
  • Measuring cup
  • Several potatoes
  • Apple corer or cork borer. Alternatively, you can use a cutting board and knife.
  • Table salt
  • Scale
  • Plastic cups or glasses (3)
  • Spoon
  • Ruler
  • Paper
  • Pen
  • Timer
  • Paper towels
  • Optional: Graphing paper
  • Optional: Scale
    Materials needed for this potato osmosis STEM activity


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Active Time
30-45 minutes
Total Project Time
1-2 hours
Key Concepts
icon scientific method

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