Peat Moss Hypothesis

Question- Does adding peat moss to sand affect its ability to hold water?
Hypothesis- If I add peat to sand, then the peat moss will hold most of the water because the peat moss can hold large amounts of water.
Variables-
Manipulated Variable- adding peat moss to sand
Responding Variable- peat moss can hold most of the water amount
Levels- 100% sand, 60% sand/40% peat moss, 40% sand/60% peat moss, 80% sand/ 20% peat moss
Trials- 5
Constants- same amount of water, same kind of containers, same sand, same peat moss
Control- 100% sand
Procedure-
Put four containers on the counter and label them A, B, C, and D.
Add 200 mL of sand into container A.
Then, add 160 mL of sand and 40 mL of peat moss into container B.
Next, add 120 mL of sand and 80 mL of peat moss into container C.
Then, add water to each container and measure the amount of water the contents would have absorbed.
Lastly, dry the sand and peat moss.
Repeat steps 2-7 five more times.
Data Table (on next page)
Graph Results (on the back of the next page)
Conclusion- The purpose of this experiment was to investigate the effect of adding peat moss to sand by comparing the amount of water that peat moss can hold. The hypothesis that adding peat to sand, then the peat moss will hold most of the water was supported by the