Gravity Experiment
Topsy Turvy Plants

In this gravity experiment you will study how plants grow. This plant experiment test how well a tomato plant grows when placed in a planter upside down. Under normal conditions a tomato plant is placed in the ground with the top sticking out above ground level. The roots grow downward as the top of the plant grows upward.

Gravity Experiment, Topsy Turvy Plants, Photo by Myrna MartinGrowing tomatoes upside down

This science experiment turns everything upside down. The plant is expected to grow out of the bottom of the container and the roots are to grow upward toward the top. If you are interested in doing a science project on this subject you need to grow a second tomato plant in a container. You can then compare the growth rates of the two plants.


  • Topsy Turvy Planter
  • Potting soil
  • Large flower container
  • Two tomato plants
  • Measuring cup
  • Liquid fertilizer


  1. Measure the size of your two tomato plants.
  2. Record the information on a piece of paper with all pertinent information.
  3. Fill the Topsy Turvy Planter with potting soil.
  4. Plant one of the tomato plants in the bottom of the planter.
  5. Water the tomato.
  6. Hang it outside where it can get plenty of sunlight.
  7. Use the exact same amount of potting soil for your second container and plant your other tomato plant in it.
  8. Set the tomato plant in a container near the Topsy Turvy Planter where it can also get plenty of sunshine.
  9. Water the plant.
  10. Each week take a picture of your two tomato plants.
  11. Record the growth of each plant on your paper that you are recording your experiment on.
  12. As the tomatoes growth on both plants decide on a size that you will pick.
  13. At the appropriate time for each tomato take it off the vine and weigh it.
  14. Record each time you pick a tomato and from which plant it grew.
  15. Continue this until the end of the summer when the plants die or are killed by frost.
  16. Examine your data and decide which planter produced the most tomatoes and by how much.

More Links to Science Experiments

Elementary Science Experiments, Bird Feeders Study the feeding habits of wild birds in your back yard or porch area in this interesting experiment.

Science Experiment, Mentos Experiment Have fun creating a geyser of diet coke in the fun and exciting experiment.

Science Experiments, Great Ice Cube Race The great ice cube race tests the time it takes for different shapes of ice cubes to melt.

Water Cycle Experiments, Acid Rain Learn what happens when acid rain falls on objects made of calcite in this experiment.

Volcano Experiment, Volcanic Eruptions Find out what happens when expanding gases in magma cannot escape beneath a volcano.

Gravity Experiment, Topsy Turvy Plants Have fun growing tomatoes upside down in this fun gravity experiment.

Earth Science The links on this page include information on the Earth, the Rock Cycle, Volcanoes, experiments, activities and much more.


RC Igneous Rocks
ID Metamorphic Rocks

Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets.  The Kids Fun Science Bookstore covers a wide range of earth science topics.  Click here to browse. 

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