Does Soil Contain Water?

Kindergarten Science Activities: Does Soil Contain Water?

What You Need:

  • 3 Coffee cans
  • Regular moist dirt from a garden
  • Dry sand from a sandbox (collected at the same time as the dirt, under similar conditions)
  • Black construction paper
  • Tape
  • Sunny window or top of a warm radiator

What You Do:

  1. Make a guess (hypothesis) with your kindergartener. Ask if she thinks that dirt and sand contain water. Then ask how she can tell, and which one might hold more water.
  2. Then, line up your coffee cans and leave the first one dry and empty.
  3. Place black construction paper across the top of it, and tape it down at the edges.
  4. Now fill the next can half full with your garden dirt, and tape construction paper across the top as you did with the first can.
  5. Finally, fill the third can half full with sand and cover with the construction paper.
  6. Put all three cans in front of a sunny window and leave them there for a couple of hours.
  7. When you come back to observe, the paper on the top of the empty can should look dry and untouched. The paper on top of the dirt should be quite drenched. The paper on top of the sand will be slightly moist.
  8. Talk like a scientist with your child: why is it important to know if soil holds water? What if we just planted in sand? Or dry air? Ask what this tells us about the importance of water in our world.

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