Science project

Will A Plant Still Grow Even When You Put Something On Top Of It?

Research Questions

Why do plants need to be planted in soil?

Plants need food and water in order to grow. But do they need space? In this experiment we'll place objects with two different transparent weights--a piece of thin plastic and a piece of weighted glass--on top of a plant to see if we can prevent it from growing.


  • Bean seeds
  • three plant pots
  • Soil
  • Water
  • Sunlight
  • Sheet of thin plastic
  • Piece of weighted glass
  • Ruler

Experimental Procedure:

  1. Plant three seeds into each of the soiled plant pots.
  2. In one of the pots, place a thin plastic sheeting snugly over the soil.
  3. In another pot, place a weighted piece of glass on top. This should sit directly on top on the seeds.
  4. Leave the third pot alone.
  5. Take all three pots and put them under direct sunlight. Water the plants as necessary for two to four weeks
  6. Observe the germination rate and growth rates as well as plant health of all three pots.
  7. Record your results.

Terms/Concepts: Photosynthesis; Plant growth; Seed Germination; Plant care


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