TWANJAH'S+RESEARCH

Twanjah Logan Period 2 November 27, 2011

DESIGN OVERVIEW __ The growth of mold on moist bread __ __Organism:__ Mold __Hypothesis:__ If I use oil on bread rather then water to moisten the bread then mold will grow faster. __Independent Variable:__ Oil on bread __Dependent Variable:__ The rate at which mold will grow __Sample size__: 20 pieces of bread __Control Group__: Water and bread __Experimental Group__: Oil and Bread __Scientific Process__: Mold grows more efficient on moist surfaces because the moisture is allowing the mold spores to expand. Mold needs moist areas to grow on, so by applying oil on the bread, it will allow the mold to grow more efficient and possibly at a higher rate.

Detailed Procedures * The bread must be covered. I can not come in contact with the bread unless I’m turning the bread over to take pictures. If I mess with the bread, it will become a biased experiment. If the experiment does not go right the I will restart my procedures but next time place the group in a area in which I would not have to touch the bread. Chart of materials ||  ||   ||   ||   ||   ||  Experiment Data Needed The data will consist of days and measurements in numbers, which mold grows. I will display the data in both a bar and a line graph. I will use the data I collected and recorded in my data booklet. Using both a bar graph and a line graph will help one understand the data better because one can see the data two different ways. That way it’s beneficial to the one making sense of it.
 * 1) I will cut bread into 20 even squares
 * 2) I will divide the bread into two groups and name it Group A and Group B
 * 3) Group A has ten pieces of bread, which is the control group
 * 4) Group B has ten pieces of bread, which is the experimental group
 * 5) I will put five drops of water on each bread in Group A
 * 6) I will put five drops of oil on each bread in Group B
 * 7) I will place each piece of bread in group A in its own plastic bag and label it
 * 8) I will place each piece of bread in group B in its own plastic bag and label it
 * 9) I will set the two groups in my garage
 * 10) Everyday in the morning at7:05and in the evening at4:30I will take pictures of each piece of bread, front and back, in Group A/B
 * 11) I will print the picture out, place a transparence grid over each picture, and count the square in which the mold grew
 * 12) I will record my data in a data booklet
 * 13) I will continue these steps over a 7 day period
 * Item || Where Obtained || Quantity || Cost || Total Cost ||
 * Bread ||  store   ||   1   ||   $1.39   ||   $1.39   ||
 * Water ||  home   ||   a cup   ||   N/A   ||   Free   ||
 * Oil ||  store   ||   1   ||   $2.49   ||   $2.49   ||
 * Grand Total: ||  $3.88   ||   ||   ||   ||