Science Expo 2013 Wamogo’s Wonder Worm Ms. Clarkin’s Honors Biology
Problem How can weimprovesoil aeration?
Hypothesis If the worm is effective, then about half of the amount of water put in the soil will drain out because the soil will have good aeration.
Materials List • - Nickel and titanium wire • - Beaker • - Coffee filter • - Water • - Live Worms • - 2 tanks • - Soil • - Batteries • Stocking
Variables Independent Variable: type of worms Dependent Variable: amount of water Control: soil without worms Control Variables: amount of water, amount of dirt, time elapsed
Procedure 1. Put 4 inches of soil in a tank 2. Test 1 cup of soil with the coffee filter; add 1/2 cup of water 3. Record how much water drains out after 1 minute 4. Put 10 worms in one tank and the meshworm in the other 5. Leave the worms for 5 hours (for us, 9:30 - 2:30) 6. Test the soils again 7. Record and analyze
Results April 1st, 2013 ~7hours = 4.2 mL of Water April 3rd, 2013 ~48 hours = 9.6 mL of Water April 5th, 2013 After~96hours = 14 mL of Water
Conclusion • We weren’t able to make a functioning worm but we have a model of what we wanted it to be. • Our goal was to have a meshworm that expands and contracts (like a worm) to aerate the soil. • If we can move on to the rest of the Expo we will find a way to make a functioning meshworm!