Purpose:Materials: |
Do all soils have the same saturation rate?samples of clay, sand, and loam (potting soil), 3 plastic cups, nail, bucket, water, stop watch or watch with second hand |
| Procedures: | 1. Using the nail, poke 4 holes in
the bottom
of each cup.
2. Label the cups clay, sand, and loam. Fill each cup with the corresponding soil. 3. Fill the bucket with water. Begin timing as you slowly lower the first cup into the water. 4. Stop lowering the cup when the top of the cup is just above the surface of the water. 5. Observe the soil. When you see water reaching the surface
of the
soil, stop timing. Record your times on a chart like the one below.
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Think About This:
1. Which soil became saturated the fastest? Why? Refer to "Dig
that Stuff" for help. 3. If you were a farmer, how would you use this information to help you plan irrigation? |
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