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Easy Science Fair Projects


There are many easy science fair projects that are still fun and educational. Fun science fair projects have just as much opportunity for learning as complex projects do. When it comes to easy projects, making your own miniature biodome is one of the best. Easy science fair projects like this one still yield valuable lessons and impress the masses.

Make your Own Biodome

Category: Earth Science/Biology
Ages: Elementary, Middle school

Materials Needed:

  • Clear 1 Liter Plastic Container
  • Pebbles
  • Soil
  • Seeds
  • Water
  • Ruler
  • Large Resealable Storage Bags



To start creating your biodome pour pebbles in the bottom of your plastic container. Make sure your layer of pebbles is about one half inch deep. Next, pour some soil over top of the pebbles. Make sure you have one inch of soil on top of the pebbles.

Before you plant your seeds you will need to create a trench about one fingertip deep. The trench should span horizontally across your container. Once you have dug the trench sprinkle a pinch of seeds in it. Then, cover the seeds up with soil Next, water the seeds until you start to see water collecting down in the pebbles. Finally, place the plastic container in a resealable bag and seal the bag up.

The interesting and easy part of this experiment now comes into play. Your biodome is self sustaining. You do not need to open the bag at all. The water that you used to water the seeds will recycle itself. When the roots of the plants absorb the water the water will travel back up the stem. Then, it will evaporate when it gets to the leaves. That will cause condensation which will fall back down on your plants like rain.

Where would you like to go next?

...See more of our free science experiments by age group, science type, or an alphabetical listing of all experiments?

...Download printable science project plans for K-12?

...Learn how to score top grades on your science fair project?

...Or pick up science kits for your project?


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