PROBLEM: Are worms helpful to soil?

PREDICTION:

MATERIALS: dead leaves, worms, a large glass jar, gardening tools (or spoons), containers, sand, soil

PROCEDURE: Fill the jar with alternating layers of soil and sand. Make each layer about 1 inch deep and spray each one with water so the worms can easily wiggle through. Gently put the worms into the jar, keeping them away from bright light.

Cover the top layer of soil with dead leaves. Then cover the whole jar with a dark cloth or put it in a dark place because the worms have to think they are underground. Return the worms to the soil when finished with the lab.

DRAW WHAT THE JAR LOOKS LIKE ON THE DAYS YOU OBSERVE IT.

First observation:

1. Where were the leaves on the first day you looked?

2. Describe the jar. 

Second observation:

1. Where are the leaves on the second day you looked?

2. Describe the jar.

CONCLUSIONS: Why are worms helpful to soil?