Down with Earth's Little Wormy
Michelle Guevara, Katie Daniels, Aimee McCulley, & Jacy Vest
Problem:
I wonder if we evenly distributed the 8 earthworms into three petri dishes, placing eight worms in the middle dish, then have two other dishes connected, one with the natural dirt of the earthworms, and the other with red dirt, if they would evenly distribute between the dirt and natural dirt
Manipulated Variable:
Tim-O-the
Jerry
Mr. Dinkle
Hypothesis:
If we have three petri dishes, one with no dirt, one with red dirt, and one with the worms natural dirt, and have the put the worms in the dish without dirt and see if they spread to their natural habitat.
Materials:
2. Fifteen Earthworms
3. Red Dirt and Caliche Dirt
4. A timer
5. Tape
6. Water
7. Dropper
Manipulated Variable Procedure:
If the drops of water increase it would make our sample of the red dirt, too moist and mud-like for the earthworms to be observed in.
Control Procedure:
Three petri dishes connected by tape each with a different substance inside, one that is empty, one with red dirt, and one with the dirt the worms are used to. We will keep these in a controlled environment and use them towards the hypothesis.
Observations:
Analysis:
(0-4)^2/4+(3-4)^2/4 = 4.25
We fail to reject our null hypothesis.